University of Science and Technology Beijing
China
University of Chile
Chile
La Trobe University
Australia
Harrisburg University
USA
The University of Calgary
Canada
Shanghai University of Electrical Power
China
ENEA
Italy
University of Cassino and Southern Lazio
Italy
Jan Dlugosz University in Czestochowa
Poland
University of Craiova
Romania
University of Copenhagen
Denmark
Spanish Council of Scientific Research CSIC
Spain