1. Taras Shevchenko National University of Kyiv, 64, Volodymyrska Street, Kyiv UA 01601, Ukraine
2. Admiral Makarov National University of Shipbuilding, 9, Geroiv Ukrainy Avenue, Mykolayiv 54050, Ukraine
3. V.O. Sykhomlynsky National University of Mykolaiv, 24, Nikolska Str., Mykolayiv 54030, Ukraine