Milićević, Nikola, Aleksandar Grubor, Nenad Đokić, and Goran Avlijaš. 2018. “Retail Out-of-Stocks in the Context of Centralized and Direct Delivery”. Promet - Traffic&Transportation 30 (1), 105-14. https://doi.org/10.7307/ptt.v30i1.2466.