Thong, Pham Van, Nguyen Hien, Nguyen Son Ha, and Nguyen Thi Thanh Chi. “Synthesis and Structure of Some Azolium Salts”. Vietnam Journal of Chemistry 55, no. 2 (April 28, 2017): 248. Accessed May 7, 2024. https://vjs.ac.vn/index.php/vjchem/article/view/2525-2321.2017-00454.