1. Faculty of Marine Engineering, "Mircea cel Batran" Naval Academy,Department of Electrical Engineering and Naval Electronics,Constanta,Romania
2. National University for Science and Technology POLITEHNICA of Bucharest,Department of Electrotechnics, Faculty of Electrical Engineering,Romania
3. "Mircea cel Batran" Naval Academy,Department of Electrical Engineering and Naval Electronics, Faculty of Marine Engineering,Constanta,Romania