Zheng, Yansheng, Zhihao Zhuo, Yi He, and Qian Mo. “Structure and Spectral Studies of N-Ethyl Pyridinium Bromide Ionic Liquids: DFT and Ab Initio Study”. Asian Journal of Chemistry 25, no. 6 (January 9, 2013): 3233–3236. Accessed July 21, 2024. https://asianpubs.org/index.php/ajchem/article/view/25_6_64.