Drozdziel, Pawel, Leszek Krzywonos, Radovan Madlenak, and Iwona Rybicka. 2014. “Selected Aspects of Analyses of Failure Rates of Active Safety Systems in Buses”. Communications - Scientific Letters of the University of Zilina 16 (3), 114-19. http://journals.uniza.sk/index.php/communications/article/view/535.