Koumparos, Apostolos T. [P:(DE-Juel1)188781] ; Karydis, Vlassis A. [P:(DE-Juel1)176592] ; Gkatzelis, Georgios [P:(DE-Juel1)184937] ; Mihalopoulos, Nikolaos [P:(DE-HGF)0] ; Tsimpidi, Alexandra P. [P:(DE-Juel1)178035]