Vapor-liquid equilibria and density measurement for binary mixtures of o-xylene + NMF, m-xylene + NMF and p-xylene + NMF at 333.15 K, 343.15 K and 353.15 K from 0 kPa to 101.3 kPa Chen, W.K.; Lee, K.J.; Chang, C.M.; Ko, J.W.; Lee, L.S.; Fluid Phase Equilibria 2010, 291, 40-47