1. Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, 10002 Zagreb, Croatia
2. Paul Scherrer Institute, Forschungsstrasse 111, Villigen PSI, 5232 Villigen, Switzerland
3. Department of Mechanical and Process Engineering, Eidgenössische Technische Hochschule Zurich (ETHZ), Leonhardstrasse 21, 8092 Zurich, Switzerland