Gao, Y., Voigt, A., Hilfert, L., & Sundmacher, K. (2008). Effect of Polyvinylpyrrolidone on the Microstructure of the Microemulsion 1-butyl-3-methylimidazolium tetrafluoroborate/Triton X-100/Cyclohexane. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 329, 146-152. doi:10.1016/j.colsurfa.2008.07.026.