1. RATEN ICN Pitesti,Department of Nuclear Materials, Corrosion and Analysis Surface,Mioveni,Romania
2. Pitesti University Center National University of Science and Technology, Politehnica Bucharest,Faculty of Electronics, Communications and Computers,Pitești,Romania
3. National University of Science and Technology, Politehnica Bucharest,Department of Electronics, Commuunications and Computers,Pitești,Romania