(Vapor + liquid) equilibrium data for (carbon dioxide + 1,1-difluoroethane) system at temperatures from (258 to 343)K and pressures up to about 8 MPa Madani, H.; Valtz, A.; Coquelet, C.; Meniai, A.H.; Richon, D.; The Journal of Chemical Thermodynamics 2008, 40, 1490-1494