Orošnjak, M., Jocanović, M., Gvozdenac-Urošević, B., Šević, D., Duđak, L., & Karanović, V. (2020). Bus Fleet Management – A Systematic Literature Review. Promet - Traffic&Transportation, 32(6), 761-772. https://doi.org/10.7307/ptt.v32i6.3437