GENERALIZATION OF APPLICATION OF FUNDAMENTAL LEMMA OF VARIATIONAL CALCULUS TO THE REVOLUTIONIZE TRANSPORTATION BY USING THE SOLUTION OF BRACHICHRONE. bjami [Internet]. 2023 Jun. 20 [cited 2026 Apr. 27];6(1):49-58. Available from: https://js.ugd.edu.mk/index.php/bjami/article/view/5658