• 1972: B.A. Degree in Physics (Minor in Mathematics) Dartmouth College, USA, Magna Cum Laude, Honors in Physics.

• 1974: M.S. Degree in Physics, University of Rochester, N.Y.

• 1978: Ph. D. Degree in Theoretical Physics, University of Rochester, N.Y., U.S.A.

• 1978-79: Bateman Research Instructor, Department of Applied Mathematics, California Institute of Technology.

• 1979-81: Visiting Assistant Professor, Department of Mathematics and Computer Science, Clarkson University, N.Y.

• 1981-84: Assistant Professor, Department of Mathematics and Computer Science, Clarkson University, N.Y.

• 1982-83: Research Associate (on leave from Clarkson University), Institute for Theoretical Physics, University of Amsterdam, the Netherlands.

• 1984-86: Associate Professor, Department of Mathematics and Computer Science, Clarkson University, Potsdam, N.Y.

• 1985-86: Visiting Professor (on leave from Clarkson University), Physics Department, University of Thessaloniki, Thessaloniki, Greece.

• 1986-90: Associate Professor, Department of Mathematics, University of Patras, Patras, Greece.

• 1989-90: Visiting Professor, Physics Department, University of Texas at Austin.

• 1990- : Professor, Department of Mathematics, University of Patras.

• December 1996-March 1997 Visiting Professor, Department of Mathematics, University of Amsterdam, the Netherlands.

• January 9 – February 8, 2000, Visiting Researcher, Centro Internacional de Ciencias, Universidad de Morelos, Mexico.

• September 2000-January 2001 Visiting Professor, Department of Mathematics, University of Cyprus, Cyprus.v

• September 2000 - 2007: Coordinator of the course "Mathematics I" for the Study Programme in Informatics of the Hellenic Open University.

• March 1 – May 31, 2005: Visiting Researcher at Max Planck Institute for Complex Systems, Dresden. Germany.

• January 14 – February 6, 2006, Visiting Scientist, Centro Internacional de Ciencias, Universidad de Morelos, Cuernavaca, Mexico.

• January 3 – January 20, 2007, Visiting Scientist, Centro Internacional de Ciencias, Universidad de Morelos, Cuernavaca, Mexico.

• March 30 – April 22, 2007, Visiting Scientist, Waseda University, Tokyo, Japan and Kyoto University, Japan.

• April 21 – 27, 2009, Visiting Professor, Physics Department, University of Rostov – on – Don, Russia.

• March 1 – April 2, 2010, Visiting Researcher, Centro Brasileiro de Pesquisas Fisicas (Brazilian Center of Physics Research), Rio de Janeiro, Brasil.

• April 5 – June 25, 2010: Visiting Researcher at Max Planck Institute for Complex Systems, Dresden. Germany.

• March 1 – April 15, 2013, Visiting Researcher, New Zealand Institute of Advanced Studies, University of Massey, New Zealand.

• April 20 – May 15, 2013, Visiting Researcher, Centro Brasileiro de Pesquisas Fisicas (Brazilian Center of Physics Research), Rio de Janeiro, Brasil.

• June 4 – 24, 2013, Visiting Researcher, Department of Applied Mathematics and Theoretical Physics, Cambridge University, England.

• 2015, June 18 – 25, Visiting Researcher, Weizmann Institute of Sciences, Department of Chemical Physics, Rehovot, Israel.

• 2015, 1-11 September, Visiting Researcher, Center for theoretical Physics of Complex Systems, Institute of Basic Science, Daejeon, Korea.