1. Department of Composites and Carbon Materials; Institute of Rock Structure and Mechanics; Academy of Sciences of the Czech Republic; v.v.i, V Holešovičkách 41 182 09 Prague 8 Czech Republic
2. Department of Mechanics; Biomechanics and Mechatronics; Faculty of Mechanical Engineering; Czech Technical University in Prague; Technická 4 166 07 Prague 6 Czech Republic