(
2009)
Vernadakis, Nikolaos; Giannousi, Maria; Zetou, Eleni; Kioumourtzoglou, Efthimis; Nikolaos Vernadakis - Democritus University of Thrace; Maria Giannousi - Democritus University of Thrace; Eleni Zetou - Democritus University of Thrace; Efthimis Kioumourtzoglou - Democritus University of Thrace