1. University of Agricultural Sciences and Veterinary Medicine,Dept. of Preclinical Sciences,Cluj-Napoca,România
2. University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca,Dept. of toxicology,Cluj-Napoca,România
3. University of Agricultural Sciences and Veterinary Medicine,Dept. of Land Measurements and Exact Sciences,Cluj-Napoca,România
4. Universitat de Lleida, UDL,Dept. of Environment and Soil Sciences,Lleida,Spain,25198
5. University of Oradea,Control Systems Engineering Department,Oradea,Romania