Tomšič, Marija, France Sevšek, and Darja Rugelj. “Travelling Habits and Perceived Limitations of Older City Bus Users”. Promet - Traffic&Transportation 29, no. 4 (September 4, 2017): 425–431. Accessed August 27, 2025. https://traffic2.fpz.hr/index.php/PROMTT/article/view/2679.