1. Compounds Russian Academy of Sciences,Institute of Macromolecular,St. Petersburg,Russia
2. Peter the Great St. Petersburg Polytechnic University,Energy Engineering Department,St. Petersburg,Russia
3. Peter the Great St. Petersburg Polytechnic University,Institute of Electronics and Telecommunications,St. Petersburg,Russia
4. Binh Duong University,Scientific Research and External Relations Department,Ho Chi Minh,Vietnam