- Gunma University, Japan
- Hirosaki University, Japan
- Chung-ang University, Korea
- Universiti Tunku Abdul Rahman, Malaysia
- Western Michigan University (Kalamazoo), USA
- University of the Free State, South Africa
- Delchev University of Stip, Macedonia
- Madrid Institute for Advanced Studies of Materials, Spain
- M.O.Auezov South Kazakhstan state University, Kazakhstan
- University of Chemical Technology and Metallurgy, Sofia, Bulg...
- Ivanovo State University of Chemistry and Technology, Russia
- Far East Research Institute of Chemistry of Russian Academy o...