Zebec, S., Zelenika, R. and Zečević, S. (2007) “Measuring the Intellectual Capital of International Carriers as Logistic Operators”, Promet - Traffic&Transportation, 19(2), pp. 103–114. Available at: https://traffic2.fpz.hr/index.php/PROMTT/article/view/2214 (Accessed: 26 August 2025).