Ćorić, I., and K. Vojvodić. “ISSUES IN DELIVERY OPERATIONS – CAN VARIABLE PAY SCHEMES REALLY WORK?”. Ekonomski vjesnik/Econviews - Review of Contemporary Business, Entrepreneurship and Economic Issues, vol. 29, no. 2, Dec. 2016, pp. 35-44, https://hrcak.srce.hr/ojs/index.php/ekonomski-vjesnik/article/view/4622.