“Spectroscopic Study of Some 1,3,4-0xadiazole, 1,3,4- Thiadiazole and 1,2,4- Triazole Derivatives”. Ibn AL-Haitham Journal For Pure and Applied Sciences 19, no. 3 (December 29, 2017): 99–116A. Accessed May 15, 2024. https://jih.uobaghdad.edu.iq/index.php/j/article/view/1652.