Zavada, Josip, Zvonimir Pajić, and Jasna Blašković. “CO-Ordinated Action Design of Rheostatic and Air Brakes on the Electric Railcar Series 6 111”. Promet - Traffic&Transportation 11, no. 1 (October 11, 2012): 27–32. Accessed August 27, 2025. https://traffic2.fpz.hr/index.php/PROMTT/article/view/2313.