Markovs'ka, A.S., Oles Honchar Dnipropetrovsk National University (Ukraine)
Melih, E., Akdeniz University, Antalya (Turkey)
Motornyi, V.P., Oles Honchar Dnipropetrovsk National University (Ukraine)
Motornyi, V.P., Oles Honchar Dnipro National University (Ukraine)
