Francisco Guillén-González & Giordano Tierra. (1970). Splitting Schemes for a Navier-Stokes-Cahn-Hilliard Model for Two Fluids with Different Densities.
            <i>Journal of Computational Mathematics</i>. <i>32</i> (6).
            643-664.
         doi:10.4208/jcm.1405-m4410