B. IBRAHIM, A.; M. HUSSIEN, M. Effect of Piezoelectric Parameters on Phonon Focusing in Cubic Semiconductor Crystals. Rafidain Journal of Science, [S. l.], v. 27, n. 1, p. 354–363, 2018. DOI: 10.33899/rjs.2018.143942. Disponível em: https://ojs.uomosul.edu.iq/index.php/rsci/article/view/46527. Acesso em: 9 sep. 2025.