Research Collaborators (emeritus or visiting):

M.Bouroushian, (NTUA, Athens)

S.Kennou , D.Skarlatos (University of Patras),

Jiri Pfleger, Stan .Nespourek, Samrana Kazim, David Rais  (Czech Academy of Sciences), I.Kostic (Slovac Academy of Sciences)

Ulf Soderval , Bengt Nilsson (Chalmers University)