Temperature and Pressure Dependence of the Viscosity of the Ionic Liquids 1-Methyl-3-octylimidazolium Hexafluorophosphate and 1-Methyl-3-octylimidazolium Tetrafluoroborate Harris, K.R.; Kanakubo, M.; Woolf, L.A.; Journal of Chemical & Engineering Data 2006, 51, 1161-1167