B. Ibrahim A, M. Hussien M. Effect of Piezoelectric Parameters on Phonon Focusing in Cubic Semiconductor Crystals. RSCI [Internet]. 2018 Mar. 1 [cited 2025 Sep. 10];27(1):354-63. Available from: https://edusj.uomosul.edu.iq/index.php/rsci/article/view/46527