Ivaković, Čedomir, Ratko Stanković, and Mario Šafran. “Optimisation of Distribution Network Applying Logistic Outsourcing”. Promet - Traffic&Transportation 22, no. 2 (January 27, 2012): 87–94. Accessed August 26, 2025. https://traffic2.fpz.hr/index.php/PROMTT/article/view/1445.