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Helena Reis graduated from University of Porto in 2006 under the supervision of José Basto-Gonçalves. She is "Professora Auxiliar" (Assistant Professor) at the University of Porto since 2006. She has published several papers in International journals including "Journal de Mathématiques Pures et Appliquées", "Compositio Mathematica", "TAMS", "Commentarii Mathematici Helvetici", "Journal of the Institute of Mathematics of Jussieu", "Journal London Math. Soc." among others. Helena has supervised 1 PhD thesis defended on 2014 and currently has 1 PhD student. She has been recipient of several research grants over the course of her career. In particular, she has coordinated 3 projects (2 of them financially supported by FCT (Portugal) and another 1 by CNRS (France)) obtained through competitive calls.
Identification

Personal identification

Full name
Helena Maria Monteiro Moreira Oliveira dos Reis

Citation names

  • Reis, Helena

Author identifiers

Ciência ID
3419-CE6E-D804

Telephones

Telephone
  • 225571100 (Professional)

Addresses

  • Faculdade de Economia, Rua Dr. Roberto Frias, 4200-464, Porto, Porto, Portugal (Professional)

Websites

  • https://www.fep.up.pt/docentes/hreis/ (Professional)
Education
Degree Classification
2021 - 2021
Concluded
Matemática (Título de Agregado)
Universidade do Porto Faculdade de Ciências, Portugal
" The geometry and dynamics of complex ordinary differential equations" (THESIS/DISSERTATION)
Aprovado por unanimidade
2008/02/15 - 2009/02/15
Concluded
Pos-Doutoramento (Pós-doutoramento)
Université Toulouse III Paul Sabatier, France
2002/09/01 - 2006/10/12
Concluded
Matemática (Doutoramento)
Universidade do Porto Faculdade de Ciências, Portugal
"Analytic Classification of Complex Differential Equations" (THESIS/DISSERTATION)
1999/09/01 - 2001/03/13
Concluded
Matemática Aplicada (Mestrado)
Universidade do Porto Faculdade de Ciências, Portugal
"Pontos Umbílicos em Leis de Conservação" (THESIS/DISSERTATION)
Muito Bom
1995/09/01 - 1999/07/09
Concluded
Matemática (Licenciatura)
Major in Matemática Aplicada
Universidade do Porto Faculdade de Ciências, Portugal
19
Affiliation

Science

Category
Host institution
Employer
2018/07/15 - 2018/07/31 Visiting Researcher (Research) Instituto Nacional de Matemática Pura e Aplicada, Brazil
Instituto Nacional de Matemática Pura e Aplicada, Brazil
2017/02/01 - 2017/02/28 Visiting Researcher (Research) Instituto Nacional de Matemática Pura e Aplicada, Brazil
Instituto Nacional de Matemática Pura e Aplicada, Brazil
2014/11/01 - 2015/01/31 Visiting Researcher (Research) Instituto Nacional de Matemática Pura e Aplicada, Brazil
Instituto Nacional de Matemática Pura e Aplicada, Brazil
2013/07/01 - 2013/07/31 Visiting Researcher (Research) Université Toulouse III Paul Sabatier, France
Université Toulouse III Paul Sabatier, France
2013/02/01 - 2013/04/30 Visiting Researcher (Research) Instituto Nacional de Matemática Pura e Aplicada, Brazil
Instituto Nacional de Matemática Pura e Aplicada, Brazil
2008/11/01 - 2008/11/30 Visiting Researcher (Research) Université Toulouse III Paul Sabatier, France
Université Toulouse III Paul Sabatier, France
2007/03/01 - 2007/05/31 Visiting Researcher (Research) Instituto Nacional de Matemática Pura e Aplicada, Brazil
Instituto Nacional de Matemática Pura e Aplicada, Brazil

Teaching in Higher Education

Category
Host institution
Employer
2006/10/12 - Current Assistant Professor (University Teacher) Universidade do Porto Faculdade de Economia, Portugal
Universidade do Porto Faculdade de Economia, Portugal
2001/03/13 - 2006/10/12 Assistant (University Teacher) Universidade do Porto Faculdade de Economia, Portugal
Universidade do Porto Faculdade de Economia, Portugal
1999/11/15 - 2001/03/13 Trainee Assistant (University Teacher) Universidade do Porto Faculdade de Economia, Portugal
Universidade do Porto Faculdade de Economia, Portugal
1997/09/01 - 1999/11/15 Tutor (University Teacher) Universidade do Porto Faculdade de Ciências, Portugal
Universidade do Porto Faculdade de Ciências, Portugal
Projects

Contract

Designation Funders
2021 - 2023/10/15 Complex Dynamics of Group Actions, Halphen and Painlevé Systems
.
Principal investigator
Centre International de Mathématiques et d'Informatique de Toulouse, France

National Science Foundation Division of Mathematical Sciences, United States

National Science Foundation, United States
Centre International de Mathématiques et d'Informatique de Toulouse

National Science Foundation Division of Mathematical Sciences
2018 - 2020/12/31 Dynamics of Complex ODEs and Geometry
PICS07914
Principal investigator
PICS - CNRS (Centre National de Recherche Scientifique), France
PICS - CNRS (Centre National de Recherche Scientifique)
2018 - 2019/12/31 Dynamics of modular vector fields, Dwork family, and applications
sem referência
Researcher
Centre International de Mathématiques et d'Informatique de Toulouse, France
Centre International de Mathématiques et d'Informatique
2014 - 2015/01/09 Hamiltonian systems: from non-integrability to complex chaos
info:eu-repo/grantAgreement/FCT/COMPETE/134600/PT
Principal investigator
Universidade do Porto Faculdade de Economia, Portugal
Fundação para a Ciência e a Tecnologia
2010 - 2012/12/01 Geometry and Dynamics of holomorphic foliations
info:eu-repo/grantAgreement/FCT/5876-PPCDTI/103319/PT
Principal investigator
Universidade do Porto Faculdade de Economia, Portugal
Fundação para a Ciência e a Tecnologia
Outputs

Publications

Journal article
  1. Belloto da Silva, André; Klimes, Martin; Rebelo, Julio C.; Reis, Helena. "A remark on first integrals of vector fields". (2022): https://arxiv.org/pdf/2110.13072.pdf.
    Submitted
  2. Reis, Helena; Rebelo, Julio C.. "On resolution of 1-dimensional foliations on 3-manifolds". Russian Mathematical Surveys 76 2 (2021): 291-355.
    Published
  3. Reis, Helena; Rebelo, Julio C.. "On resolution of 1-dimensional foliations on 3-manifolds". Uspekhi Matematicheskikh Nauk 76 2 (2021): 103-176.
    Published
  4. Ferreira, Ana Cristina; Rebelo, Julio C.; Reis, Helena. "Palais Leaf-Space Manifolds and Surfaces Carrying Holomorphic Flows". Moscow Mathematical Journal 19 2 (2019): 275-305. http://dx.doi.org/10.17323/1609-4514-2019-19-2-275-305.
    Published • 10.17323/1609-4514-2019-19-2-275-305
  5. Rebelo, Julio C.; Reis, Helena. "Discrete Orbits, Recurrence and Solvable Subgroups of ${{\mathrm{Diff}}\, ({{\mathbb {C}}}^2, 0)}$". The Journal of Geometric Analysis 27 1 (2017): 1-55. http://dx.doi.org/10.1007/s12220-015-9671-x.
    Published • 10.1007/s12220-015-9671-x
  6. Rebelo, Julio C.; Reis, Helena. "2-Dimensional Lie algebras and separatrices for vector fields on (C3,0)". Journal de Mathématiques Pures et Appliquées 105 2 (2016): 248-264. http://dx.doi.org/10.1016/j.matpur.2015.10.005.
    Published • 10.1016/j.matpur.2015.10.005
  7. Rebelo, Julio C.; Reis, Helena. "A note on integrability and finite orbits for subgroups of Diff (C n , 0)". Bulletin of the Brazilian Mathematical Society, New Series 46 3 (2015): 469-490. http://dx.doi.org/10.1007/s00574-015-0101-2.
    Published • 10.1007/s00574-015-0101-2
  8. Pinheiro, Susana; Reis, Helena. "Topological aspects of completely integrable foliations". Journal of the London Mathematical Society 89 2 (2014): 415-433. http://dx.doi.org/10.1112/jlms/jdt069.
    Published • 10.1112/jlms/jdt069
  9. Rebelo, Julio C.; Reis, Helena. "Cyclic stabilizers and infinitely many hyperbolic orbits for pseudogroups on (C,0)". Journal of the Institute of Mathematics of Jussieu 13 2 (2014): 413-446. http://dx.doi.org/10.1017/s1474748013000248.
    Published • 10.1017/s1474748013000248
  10. Rebelo, Julio; Reis, Helena. "Uniformizing complex ODEs and applications". Revista Matemática Iberoamericana 30 3 (2014): 799-874. http://dx.doi.org/10.4171/rmi/800.
    Published • 10.4171/rmi/800
  11. Mattei, J.-F.; Rebelo, J. C.; Reis, H.. "Generic pseudogroups on (C,0) and the topology of leaves". Compositio Mathematica 149 8 (2013): 1401-1430. http://dx.doi.org/10.1112/s0010437x13007161.
    Published • 10.1112/s0010437x13007161
  12. Reis, Helena. "Separatrices for $\mathbb{C}^2$ actions on 3-manifolds". Commentarii Mathematici Helvetici 88 3 (2013): 677-714. http://dx.doi.org/10.4171/cmh/300.
    Published • 10.4171/cmh/300
  13. Reis, Helena. "Semi-complete vector fields of saddle-node type in $\mathbb {C}^n$". Transactions of the American Mathematical Society 360 12 (2008): 6611-6630. http://dx.doi.org/10.1090/s0002-9947-08-04516-9.
    Published • 10.1090/s0002-9947-08-04516-9
  14. Reis, Helena. "Semi-complete foliations associated to Hamiltonian vector fields in dimension 2". Journal of Mathematical Analysis and Applications 328 2 (2007): 813-820. http://dx.doi.org/10.1016/j.jmaa.2006.05.069.
    Published • 10.1016/j.jmaa.2006.05.069
  15. Reis, Helena. "Equivalence and semi-completude of foliations". Nonlinear Analysis: Theory, Methods & Applications 64 8 (2006): 1654-1665. http://dx.doi.org/10.1016/j.na.2005.07.013.
    Published • 10.1016/j.na.2005.07.013
  16. Reis, Helena; José Basto-Gonçalves. "The geometry of quadratic 2×2 systems of conservation laws". Acta Applicandae Mathematicae 88 3 (2005): 269-329.
    Published
  17. Reis, Helena; José Basto-Gonçalves. "The geometry of conservation laws". The J. A. Pereira da Silva Birthday Schrift – Textos de Matemática (série B), Departamento da Matemática FCTUC 32 (2002): 17-33.
    Published
Manual
  1. Reis, Helena; Julio Rebelo. Local Theory of Holomorphic Foliations and Vector Fields. 2011.
Report
  1. Reis, Helena; Ferreira, Ana Cristina. 2020. Dynamical Aspects of Pseudo-Riemannian Geometry. https://www.cim.pt/magazines/bulletin/41/article/293/pdf.
Thesis / Dissertation
  1. Reis, Helena. "Analytic Classification of Complex Differential Equations". PhD, Universidade do Porto Faculdade de Ciências, 2006.
  2. Reis, Helena. "Pontos Umbílicos em Leis de Conservação". Master, Universidade do Porto Faculdade de Ciências, 2001.
Working paper
  1. Reis, Helena; Ana Cristina Ferreira; Rebelo, Julio C.. 2018. "Complete commuting vector fields and their singular points in dimension 2". Working Paper. https://arxiv.org/pdf/1809.09255.pdf.
Activities

Oral presentation

Presentation title Event name
Host (Event location)
2019/06 Mini-course of 5 hours on "Introduction to holomorphic foliations" Summer School in mathematics 2019: Foliations and Algebraic Geometry
Université de Grenoble (France)
2018/11 On reduction of singularities for vector fields in dimension 3 Real and Complex Dynamical Systems: International Conference on the occasion of Prof. Yulij Ilyashenko's 75-th birthday
Indepensent University of Moscow (Russia)
2018/07 Degenerate singular points of C2-actions on complex surfaces Conference on Complex Foliations, Dynamics and Geometry
UFF - Universidade Federal de Nitéroi (Brazil)
2017/11 On reduction of singularities for foliations in dimension 3 Holomorphic foliations in Alsace: like it or leaves it
Université de Strasbourg (France)
2017/09 Around the dynamics of Painlevé's equations XXVI International Fall Workshop on Geometry and Physics
Universidade do Minho (Portugal)
2017/06 On the dimension of the automorphism group of projective three-folds with PIC = Z Geometry of Singularities and Differential Equations, Celebrating the contributions of Felipe Cano to the Theory of Singularities
Universidad de Cantabria (Spain)
2017/02 Mini-couse of 6 hours on "Singularities of vector fields and the dimension of groups of holomorphic diffeomorphisms" IMPA Summer Program
IMPA - Instituto de Matemática Pura e Aplicada (Brazil)
2016/03 Geometry and Dynamics with Complex Time 1st Dual Meeting of CMUP: Against all Odds - Probability & Statistics vs. Geometry
Universidade do Porto (Portugal)
2016/01 Degenerate singularities of holomorphic vector fields and related problems Geometric Aspects of Modern Dynamics
Universidade do Porto (Portugal)
2015/06 2-dimensional Lie algebras and separatrices for vector fields on (C3; 0) Special Session in Complex Dynamics and Foliations, International Meeting AMS-EMS-SPM
Universidade do Porto (Portugal)
2015/01 Mini-couse of 3 hours on "Pseudogroupes de diffeomorphismes holomorphes en dimension 2" Pseudogroupes de diffeomorphismes holomorphes
Université de Toulouse III (France)
2013/09 Generic Pseudogroups on (C; 0) and the topology of leaves Geometry and Foliations 2013
University of Tokyo (Japan)
2013/04 Mini-course of 3 hours on "Pseudogrupos genéricos de (C; 0) e topologia das folhas" Seminar Program of the University of São Paulo
USP (Brazil)
2013/04 Mini-course of 3 hours on "Pseudogrupos genéricos de (C; 0) e topologia das folhas" Seminar Program of the University of São Carlos
USP - SC (Brazil)
2011/09 Singularities and global dynamics of complete vector fields Resolution of Singularities and Related Topics, 80th Birthday of Heisuke Hironaka
Centro Tordesillas de Relaciones con Iberoamérica - Universidad de Valadolid (Spain)
2010/12 Separatrices de foliaciones generadas por dos campos que conmutan Seminário Iberoamericano de Matemáticas
Centro Tordesillas de Relaciones con Iberoamérica - Universidad de Valadolid (Spain)
2010/08 Separatrizes de folheações holomorfas para campos de vectores que comutam II Workshop em Teoria de Singularidades, Equações Diferenciais e Geometria
Universidade de Viçosa (Brazil)
2007/02 Singularities of holomorphic flows I Iberian Mathematical Meeting
Fundação Calouste Gulbenkian (Portugal)
2007/01 Semi-complete vector fields of saddle-node type in dimension 3 Local holomorphic dynamics
Centro di Ricerca Matematica Ennio De Giorgi, Pisa (Italy)
2005/06 Semi-complete vector fields 8 Annual Workshop on Applications and Generalizations of Complex Analysis
Universidade de Aveiro (Portugal)

Supervision

Thesis Title
Role
Degree Subject (Type)
Institution / Organization
2021/09/01 - Current Pseudo-riemannian geodesic flows on homogeneous spaces
Supervisor
Mathematics (PhD)
Universidade do Porto Faculdade de Ciências, Portugal
2021/09/01 - Current Enlarged dynamics of Fuchsian/Kleinian groups, automorphic functions, and applications
Co-supervisor
Doctoract (PhD)
Institut de Mathématiques de Toulouse, France
2017/09 - Current Completeness for geodesics on Lorentzian manifolds
Supervisor
Universidade do Porto Faculdade de Ciências, Portugal
2018/07/01 - 2018/12/31 Post-doc supervision
Supervisor
Universidade do Porto Centro de Matemática, Portugal
2011/09 - 2014/04 Dynamics of holomorphic and stochastic differential equations
Supervisor
Universidade do Porto Faculdade de Ciências, Portugal

Event organisation

Event name
Type of event (Role)
Institution / Organization
2020 - Current Member of the Organizing Committee of the conference "Dynamical Aspects of Pseudo-Riemannian Geometry" (2020/03/02 - 2020/03/06)
Conference (Member of the Organising Committee)
Universidade do Minho, Portugal
2020 - Current Member of the organizing committee of the Special Session "Dynamical Systems, Special Equations and Applications" of the International conference on Mathematical Analysis and Applications in Science and Engineering - ICMA2SC'20 (2020/07/20 - 2020/07/24)
Conference (Member of the Organising Committee)
Instituto Politécnico do Porto, Portugal
2018/11/22 - 2018/11/23 Organizer of the "Mini-Rencontre Champs quadratiques et équations d'Euler-Arnold" (2018/11/22 - 2018/11/23)
Meeting (Member of the Organising Committee)
Université Toulouse III Paul Sabatier, France

Institut de Mathématiques de Toulouse, France
2017/09/04 - 2017/09/07 Member of the organizing committee of the "Summer School of the UC-UP Joint PhD Program in Mathematics" (2017/09/04 - 2017/09/07)
Conference (Member of the Organising Committee)
Universidade do Porto Faculdade de Ciências, Portugal
2016/01/11 - 2016/01/16 Member of the Organizing Committee of the conference "Geometric Aspects of Modern Dynamics" (2016/01/11 - 2016/01/16)
Conference (President of the Organising Committee)
Universidade do Porto Faculdade de Ciências, Portugal
2015/06/10 - 2015/06/13 Member of the organizing committee of the Special Session "Complex Dynamics and Foliations" of the International joint Meeting AMS-EMS-SPM (2015/06/10 - 2015/06/13)
Conference (Member of the Organising Committee)
Universidade do Porto Faculdade de Ciências, Portugal
2010/01 - 2013/12 Organization of the "Geometry and Topology Seminar" of the CMUP (Centro de Matemática da Universidade do Porto) (2010/01 - 2013/12)
Seminar (Co-organisor)
Universidade do Porto Centro de Matemática, Portugal
2011/01/18 - 2011/01/21 Member of the Organizing committee of the "Workshop Geometry and Dynamics of Holomorphic Foliations" (2011/01/18 - 2011/01/21)
Conference (President of the Organising Committee)
Universidade do Porto Faculdade de Ciências, Portugal
2006/01 - 2007/12 Organization of the "Geometry and Topology Seminar" of the CMUP (Centro de Matemática da Universidade do Porto) (2006/01 - 2007/12)
Seminar (Member of the Organising Committee)
Universidade do Porto Centro de Matemática, Portugal

Jury of academic degree

Topic
Role
Candidate name (Type of degree)
Institution / Organization
2021/10/28 Holonomy and Equivalence of Analytic Foliations
(Thesis) Main arguer
Francisco Chaves (PhD)
Université de Haute-Alsace, France
2020/11/04 Modelos Matemáticos em Imunoterapia de Cancro
(Thesis) Arguer
Emilie Gomes (Master)
Universidade do Porto Faculdade de Ciências, Portugal
2019/12/17 Géométrie de Certains Tissus Holomorphes Singuliers en Dimension 2
(Thesis) Main arguer
Adjaratou Arame Diaw (PhD)
Université de Rennes 1, France
2018/12/18 Deformation of Legrendrian curves
(Thesis) Arguer
Marco António de Sousa e Silva dos Santos Mendes (PhD)
Universidade de Lisboa Faculdade de Ciências, Portugal
2016/11 Modelos Matemáticos da Coinfeção do VIH e da Tuberculose
(Thesis) Main arguer
João Paulo Simões Maurício de Carvalho (Master)
Universidade do Porto Faculdade de Ciências, Portugal
2014/04/04 Dynamics of Holomorphic and Stochastic Differential Equations
Supervisor
Susana Filipa Couto da Silva Salgado de Abreu Araújo Pinheiro (PhD)
Universidade do Porto Faculdade de Ciências, Portugal
2013/10/04 Formes normales de singularités de feuilletages et invariants de glissement
Thesis Member
Truong Hong Minh (PhD)
Université Toulouse III Paul Sabatier, France
2013/07/04 Modelos Matemáticos para a transmissão do Vírus HIV/SIDA
(Thesis) Main arguer
Ana Rita Moreira Carvalho (Master)
Universidade do Porto Faculdade de Ciências, Portugal
2011/07/18 Legendrian Varieties and Quasi-Ordinary Hypersurfaces
(Thesis) Arguer
António Manuel Bandeira Barata Alves de Araújo (PhD)
Universidade de Lisboa Faculdade de Ciências, Portugal

Committee member

Activity description
Role
Institution / Organization
2021/03/01 - Current Dputy director of CMUP (Center of Mathematics of the University of Porto)
President / Vice-president
Universidade do Porto Centro de Matemática, Portugal
2014/12 - 2018/07 Member of the Pedogogic Commision of Faculty Economics of the University of Porto
Member
Universidade do Porto Faculdade de Economia, Portugal
2013/01 - 2014/01 Member of CMUP's direction (CMUP = Center of Mathematics of the University of Porto)
Member
Universidade do Porto Centro de Matemática, Portugal
2011/01 - 2012/12 Member of CMUP's scientific committee (CMUP = Center of Mathematics of the University of Porto)
Member
Universidade do Porto Centro de Matemática, Portugal
2009/01 - 2010/12 Member of CMUP's direction (CMUP = Center of Mathematics of the University of Porto)
Member
Universidade do Porto Centro de Matemática, Portugal

Conference scientific committee

Conference name Conference host
2020 - Current Dynamical Aspects of Pseudo-Riemannian Geometry Universidade do Minho
2020 - Current International Conference on Mathematical Analysis and Applications in Science and Engineering - ICMA2SC'20 Instituto Politécnico do Porto
2020 - Current Special Session on "Dynamical Systems, Special Equations and Applications" of the International Conference on Mathematical Analysis and Applications in Science and Engineering - ICMA2SC'20 Instituto Politécnico do Porto
2017 - Current Summer School of the UC-UP Joint PhD Program in Mathematics Universidade do Porto
2016 - Current Geometric Aspects of Modern Dynamics Universidade do Porto
2015 - Current Special Session on "Complex Dynamics and Foliations" of the International joint meeting AMS-EMS-SPM Universidade do Porto
2011 - Current Geometry and Dynamics of Holomorphic Foliations Universidade do Porto

Interview (newspaper / magazine)

Activity description Newspaper / Forum
2020 An interview with José Basto-Gonçalves CIM Bulletin
2016 An interview with Julio Rebelo CIM Bulletin

Journal scientific committee

Journal title (ISSN) Publisher
2019/12 - Current Entropy (1099-4300) MDPI AG

Mentoring / Tutoring

Topic Student name
2021/02/15 - Current Pseudo-riemannian geodesic flows on homogeneous spaces Laura Rosales Ortiz
2017/12 - 2018/03 Singularities of holomorphic flows Vitor Bessa
2017/01 - 2017/04 Geodesic ow in manifolds of non-positive curvature Ahmed Elshafei
2009/12 - 2010/04 Integrability of Complex Differential Equations Susana Filipa Couto da Silva Salgado de Abreu Araújo Pinheiro

Other jury / evaluation

Activity description Institution / Organization
2021/01/15 - Current Member of the jury committee for the competition for 1 research position in Geometry at CMUP - Centro de Matemática da Univerdidade do Porto Universidade do Porto Centro de Matemática, Portugal
2018 - 2018 Participation in the Committee for 3 Pos-Doc positions in Mathematics, CMUP (Centro de Matemática da Universidade do Porto), UID/MAT/00144/2013, FCT/MCTES Universidade do Porto Centro de Matemática, Portugal
2009 - 2009 Participation in the Committee for 5 grants in "Starting Research" in Mathematics, CMUP (Centro de Matemática da Universidade do Porto), Project MATH-Norte-Porto-144 Universidade do Porto Centro de Matemática, Portugal
Distinctions

Award

2016 Sabatical fellowship
Fundação para a Ciência e a Tecnologia, Portugal
2013 Sabatical fellowship
Fundação para a Ciência e a Tecnologia, Portugal
2013 Grant-in-Aid for Scientific Research
Nihon Gakujutsu Shinkokai, Japan
2010 Sabatical fellowship
Fundação para a Ciência e a Tecnologia, Portugal
2007 Post-Doc Fellowship
Fundação para a Ciência e a Tecnologia, Portugal
1999 Merit scholarships
Universidade do Porto Faculdade de Ciências, Portugal
1999 Engenheiro António de Almeida
Fundação Engenheiro António de Almeida, Portugal
1998 Merit scholarships
Universidade do Porto Faculdade de Ciências, Portugal
1997 Dr. Gomes Teixeira
Universidade do Porto Faculdade de Ciências, Portugal
1997 Prof. Abílio Aires
Universidade do Porto Faculdade de Ciências, Portugal