1. Institute of Thermomechanics AS CR, v. v. i., Dolejškova
5, Prague 8, 182 00 Czech Republic
2. Faculty of Mechanical Engineering, University of West Bohemia, Univerzitní 8, Pilsen, 306 14 Czech Republic
3. Faculty of Science, University of South Bohemia, Branišovská
31, 370 05 České
Budějovice, Czech Republic