Phase equilibrium measurements of (methane + benzene) and (methane + methylbenzene) at temperatures from (188 to 348) K and pressures to 13 MPa Hughes, T.J.; Kandil, M.E.; Graham, B.F.; Marsh, K.N.; Huang, S.H.; May, E.F.; The Journal of Chemical Thermodynamics 2015, 85, 141-147