Volumetric properties of room temperature ionic liquid 1. The system of {1-methyl-3-ethylimidazolium ethyl sulfate + water} at temperature in the range (278.15 to 333.15) K Lu, X.M.; Xu, W.G.; Gui, J.S.; Li, H.W.; Yang, J.Z.; The Journal of Chemical Thermodynamics 2005, 37, 13-19