A. Kasir, F., فاروق, M. Alyas, M., & مهند. (2025). Theoretical Study of the Mean and Resultant Change of Interaction Frequency for Oxygen-Oxygen Ion Dipoles in CaF2 Crystal. Rafidain Journal of Science, 24(5), 86–96. https://doi.org/10.33899/rjs.2013.74553