Naeimi, Hossein, et al. “Facile and Mild Synthesis of 1-Substituted-1H-1,2,3,4-Tetrazoles Catalyzed by Methanesulfonic Acid under Solvent-Free Conditions”. Iranian Journal of Catalysis, vol. 3, no. 4, Feb. 2024, https://oiccpress.com/ijc/article/view/3780.