[1]
Y. B. Saddeek, M. A. Azooz, and S. H. Kenawy, “Effect of fly ash on the Li2O-B2O3 system: structural study by pulse echo technique”, archacoust, vol. 30, no. 3, Jan. 2005, Accessed: Jan. 13, 2025. [Online]. Available: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/523