1. Wrocław University of Science and Technology, Department of Mechanics and Materials Science Engineering, Smoluchowskiego 25, 50-370 Wrocław, Poland
2. Slovak University of Technology in Bratislava, Institute of Nuclear and Physical Engineering, Ilkoviéova 3, 812 19 Bratislava, Slovakia
3. Czech Technical University in Prague, Department of Nuclear Reactors, V Holešoviékách 2, 180 00 Prague, Czech Republic