Vapour-liquid phase boundaries including the near critical regions of the (CO2 + styrene, CO2 + 1,4-dioxane, and CO2 + N,N-dimethylformamide) systems Tiwikrama, A.H.; Afrianto, .; Chiu, H.Y.; Peng, D.Y.; Lin, H.m.; Lee, M.J.; The Journal of Chemical Thermodynamics 2019, 136, 141-148