Tsotakos; Tsoukalas; Patsis; Panagiotopoulou; Nikolic; Jankovic; Djokic; Raptopoulou; Terzis; Papagiannopoulou; Pelecanou; Papadopoulos; Pirmettis Inorganica Chimica Acta, 2011 , vol. 377, # 1 p. 62 - 68