An analysis of the unified formulation for the equilibrium problem of compositional multiphase mixturesIbtihel Ben Gharbia, Mounir Haddou, Quang Huy Tran and Duc Thach Son VuESAIM: M2AN, 55 6 (2021) 2981-3016DOI: https://doi.org/10.1051/m2an/2021075