Thermodynamic Properties of Mixtures Containing Ionic Liquids. 7. Activity Coefficients of Aliphatic and Aromatic Esters and Benzylamine in 1-Methyl-3-ethylimidazolium Bis(trifluoromethylsulfonyl) Imide Using the Transpiration Method Vasiltsova, T.V.; Verevkin, S.P.; Bich, E.; Heintz, A.; Bogel-Lukasik, R.; Domańska, U.; Journal of Chemical & Engineering Data 2006, 51, 213-218