“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 ” (2025) Malaysian Journal of Fundamental and Applied Sciences, 21(6), pp. 2825–2843. doi:10.11113/mjfas.v21n6.3892.