Mucka, Peter, George Juraj Stein, and Peter Tobolka. “Passsenger Ride Comfort and International Roughness Index Specifications in the Slovak Republic”. Communications - Scientific letters of the University of Zilina 21, no. 1 (February 20, 2019): 14-21. Accessed April 6, 2026. http://journals.uniza.sk/index.php/communications/article/view/1162.