1. Department of Mechanical, Energy and Biotechnology Engineering, Faculty of Engineering, Vytautas Magnus University, LT-53361 Kauno Raj, Lithuania
2. Department of Transportation and Mechanical Engineering, Georgian Technical University, Kostava St. 71, 0175 Tbilisi, Georgia
3. Lithuanian Energy Institute, Centre for Hydrogen Energy Technologies, Breslaujos St. 3, LT-44403 Kaunas, Lithuania