[1] Fdn Res & Technol Hellas FORTH, Inst Appl & Computat Math IACM, GR-70013 Iraklion, Crete, Greece
[2] Fdn Res & Technol Hellas FORTH, Inst Elect Struct & Laser, GR-70013 Iraklion, Crete, Greece
[3] Univ Crete, Dept Chem, GR-70013 Iraklion, Crete, Greece
[4] Univ Crete, Dept Math & Appl Math, GR-70013 Iraklion, Crete, Greece