Križman, Andreja, and Anton Ogorelc. “Impact of Disturbing Factors on Cooperation in Logistics Outsourcing Performance: The Empirical Model”. Promet - Traffic&Transportation 22, no. 3 (May 25, 2010): 209–218. Accessed August 27, 2025. https://traffic2.fpz.hr/index.php/PROMTT/article/view/1458.