SMREČKI, Boris. “ETOPS Procjenjivanje Pouzdanosti I Performance Sustava Za Extanded Range Operations S Dvomotornim Mlaznim Zrakoplovima”. Promet - Traffic&Transportation 7, no. 6 (January 23, 2026): 189–194. Accessed January 29, 2026. https://traffic2.fpz.hr/index.php/PROMTT/article/view/3441.