“VARIATSION PRINSIPDAN FOYDALANIB, MATEMATIK MODELLASHTIRISHNING AHAMIYATI”., ICMSE, vol. 2, no. 5, pp. 168–171, Dec. 2025, Accessed: Jun. 19, 2026. [Online]. Available: https://eoconf.com/index.php/icmse/article/view/547