Dupljanin, Đorđije, Tatjana Savković, Slaviša Dumnić, Milica Miličić, and Milica Marčeta. “The Study of CO2 Emissions for Postal Traffic Vehicles in the Territory of Vojvodina”. Put i saobracaj 63, no. 2 (April 29, 2019): 49-53. Accessed October 17, 2021. https://putisaobracaj.rs/index.php/PiS/article/view/85.