„GENERALIZATION OF APPLICATION OF FUNDAMENTAL LEMMA OF VARIATIONAL CALCULUS TO THE REVOLUTIONIZE TRANSPORTATION BY USING THE SOLUTION OF BRACHICHRONE“, bjami, Bd. 6, Nr. 1, S. 49–58, Juni 2023, Zugegriffen: 3. Oktober 2025. [Online]. Verfügbar unter: https://js.ugd.edu.mk/index.php/bjami/article/view/5658