“Acoustical Properties of (Chitin/nano-TiO2) Bio ‎Polymer Composite Gel”, JUBPAS, vol. 25, no. 5, pp. 1762–1766, Nov. 2017, Accessed: Apr. 19, 2025. [Online]. Available: https://journalofbabylon.com/index.php/JUBPAS/article/view/267