Milićević, Nikola, Aleksandar Grubor, Nenad Đokić, and Goran Avlijaš. “Retail Out-of-Stocks in the Context of Centralized and Direct Delivery”. Promet - Traffic&Transportation 30, no. 1 (March 1, 2018): 105–114. Accessed August 26, 2025. https://traffic2.fpz.hr/index.php/PROMTT/article/view/2711.