Editorial Board of following publications:

Quarterly of Applied Mathematics, Associate Managing Editor

Acta Mathematica Scientia, Chief Co-Editor

Annali di Matematica Pura ed Applicata

Archive for Rational Mechanics and Analysis

Mathematics Applied in Science and Technology

Communications in Applied Analysis

Proceedings of the Royal Society of Edinburgh

Ricerche di Matematica

Revista Matematica Complutense

Bulletin of Greek Mathematical Society

Journal of Dynamics and Differential Equations

Journal of Hyperbolic Differential Equations

Member, Board of Governors and Scientific and Academic Advisory Committee, Weizmann Institute of Science, Israel

Member, National Committee on Research and Technology, Greece

Member, Advisory Board, Institute of Mathematics, Academy of Sciences, Czech Republic

Member, Scientific Advisory Board, Archimedes Center, Crete, Greece

Member, Scientific Advisory Panel, IRIMA, University of Wales, U.K.

Member, Institute of Numerical Analysis, Crete, Greece

Member, Scientific Committee, XIV International Conference on Nonlinear Hyperbolic PDE, Padova, Italy

Member, Scientific Committee, Workshop, Crete, Greece

Cochairman, Scientific Committee, International Conference in memory of Guoping Li, Wuhan, China

Member, Scientific Committee, EUROCONFERENCES, Crete

Member, Scientific Committee, WASCOM 2011

Member, Scientific Committee, International Conference on Conservation Laws, Tata Institute, Bangalore, India

Member, Jury for habilitation thesis, UniversitÃÂ© Pierre et Marie Curie, Paris.

Member, Promotion Committee, University of Crete, Greece