1. R&D Institute-ICPE Bistrița S.A,Electrical & Automation Dept,Bistrița,Romania
2. R&D Institute-ICPE Bistrița S.A,Wastewater treatment Dept,Bistrița,Romania
3. Nat. Inst. for R&D in Electrical Engineering ICPE-CA Bucharest,Renewable Sources and Energy Efficiency Dept,Bucharest,Romania
4. Nat. Inst. for R&D in Electrical Engineering ICPE-CA Bucharest,Quality Management. Environment Dept,Bucharest,Romania
5. Nat. Inst. for R&D in Electrical Eng. ICPE-CA, Bucharest,Radiochemistry & Polymeric Materials Dept,Bucharest,Romania
6. Technical University of Cluj-N,Faculty of Electrical Engineering,Cluj-Napoca,Romania