The Role of Mixed Alkaline Earth Effects on The Elastic Properties of xBaF2–(50 – x)CaF2–50B2O3 Fluoroborate Glasses: Comparative Analysis of Ultrasonic Measurements and Theoretical Models . Mal. J. Fund. Appl. Sci. [Internet]. 2025 Dec. 20 [cited 2026 Sep. 16];21(6):2825-43. Available from: https://mjfas.utm.my/index.php/mjfas/article/view/3892