Li, Cheng, Qing-Hong Hao, Hai-Yan Liu, Chun Wang, Jing-Jun Ma, and Wen-Gang Zhu. “[HSO3-pmim][CH3SO3] As an Efficient Catalyst for the Synthesis of 1,5-Benzodiazepine Derivatives under Ultrasound Irradiation”. Asian Journal of Chemistry 25, no. 11 (June 6, 2013): 6243–6246. Accessed June 30, 2024. https://asianpubs.org/index.php/ajchem/article/view/25_12_86.