1. Khujand Polytechnic Institute of the Tajik Technical University Named after Academician M.S. Osimi,Department of Power Supply and Automation,Khujand,Tajikistan
2. Kazan State Energy University,Department of Power Supply of Industrial Enterprises,Kazan,Russian Federation
3. Mining and Metallic Institute of Tajikistan,Faculty of Electromechanics,Department of Power Supply,Buston,Tajikistan
4. University NOVA of Lisbon,UNINOVA-CTS, Faculty of Sciences and Technology,Portugal,2829-516