Bhowmik, P., Han, H., Ndedeltchev, I., Cebe, J., Kang, S.-W., & Kumar, S. (2006). Synthesis and Characterization of Ionic Liquids: Viologen bis{Tetrakis[3,5‐bis(Trifluoromethyl)Phenyl]Borate} Salts. Liquid Crystals. https://doi.org/10.1080/02678290600871598
Bhowmik, Pradip, Haesook Han, Ivan Ndedeltchev, James Cebe, Shin-Woong Kang, and Satyendra Kumar. 2006. “Synthesis and Characterization of Ionic Liquids: Viologen bis{Tetrakis[3,5‐bis(Trifluoromethyl)Phenyl]Borate} Salts”. Liquid Crystals. https://doi.org/10.1080/02678290600871598.
Bhowmik, P., H. Han, I. Ndedeltchev, J. Cebe, S.-W. Kang, and S. Kumar. Synthesis and Characterization of Ionic Liquids: Viologen bis{Tetrakis[3,5‐bis(Trifluoromethyl)Phenyl]Borate} Salts. Liquid Crystals, 21 Nov. 2006, doi:10.1080/02678290600871598.