Ali Khalil, Manal, منال, mumtaz M. S. Hussein, ممتاز, Khalil Ibrahim AL-saif, and خلیل. 2010. “Calculation of Phononic Images of Ionic Superlattice Crystals”. Journal of Education and Science (JES) 23 (1):152-71. https://doi.org/10.33899/edusj.2010.58012.