1. L.N. Gumilyov Eurasian National University, Astana, Kazakhstan
2. S. Seifullin Kazakh AgroTechnical Research University, Astana, Kazakhstan
3. Zhangir Khan University, Uralsk, Kazakhstan
4. Kyzylorda Regional Branch, Academy of Public Administration, Kyzylorda, Kazakhstan
5. Caspian University of Technology and Engineering (Sh. Yessenov), Aktau, Kazakhstan