Perić, Teodor, and Nada Štrumberger. “Ergonomic System, a Factor in the Improved Traffic Productivity”. Promet - Traffic&Transportation 9, no. 4 (October 11, 2012): 163–169. Accessed August 27, 2025. https://traffic2.fpz.hr/index.php/PROMTT/article/view/1830.