Free-boundary methods for multi-phase flows / S.P. van der PijlA mass-conserving level-set (MCLS) method for modeling of multi-phase flows / S.P. van der Pijl, A. Segal, C. VuikModeling of three-dimensional multi-phase flows with a mass-conserving level-set method / S.P. van der Pijl, A. Segal, C. Vuik