1. Institute of Telecommunications and Space Engineering Almaty University of Power Engineering and Telecommunications named after Gumarbek Daukeyev,Almaty,Kazakhstan
2. University of Telecommunications and Post,dept. of Telecommunications,Sofia,Bulgaria
3. University of Ruse,dept. of Telecommunication,Ruse,Bulgaria
4. Univeristy of Ruse,dept. of Eelectrical Power Engineering,Ruse,Bulgaria
5. University of Bandirma Onyedi Eylul,dept. of Computer Technologies,Bandirma,Balkesir,Türkiye
6. Academy of Logistic and Transport,dept. of Supervisory Board,Almaty,Kazakhstan