1. Department of Structural Engineering, Silesian University of Technology, Akademicka 5, 44-100 Gliwice, Poland
2. Centre for Advanced Technologies, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, 61-614 Poznań, Poland
3. Université de Strasbourg, CNRS, ISIS, 8 allée Gaspard Monge, 67000 Strasbourg, France