Authors
Andrzej Jakubowski
Maritime University of Szczecin, Department of Technical Mechanics IPNT WM Wały Chrobrego 1-2, 70-500, Szczecin, Poland
Renata Crasto
Maritime University of Szczecin, Department of Technical Mechanics IPNT WM Wały Chrobrego 1-2, 70-500, Szczecin, Poland