A. Kasir, F., فاروق, M. Alyas, M. and 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), pp. 86–96. doi: 10.33899/rjs.2013.74553.