1. Lugansk State Pedagogical University, Oboronnaya str., 2, 91011 Lugansk, Ukraine
2. Donetsk Institute for Physics and Engineering named after A.A. Galkin, Rozy Lyuksemburg str. 72, 83114 Donetsk, Ukraine
3. Donbas National Academy of Civil Engineering and Architecture, Derzhavina str. 2, 86123 Makeyevka, Ukraine
4. Taras Shevchenko National University of Kyiv, Volodymyrska str. 64/13, 01601 Kyiv, Ukraine
5. Institute of Industrial Economics of National academy of sciences of Ukraine, Maria Kapnist str. 2, 03057 Kyiv, Ukraine