1. Abels H.: On a diffusive interface model for two-phase flows of viscous, incompressible fluids with matched densities. Max Planck Inst. Math. Sci. 15, 307–352 (2007) (Preprint)
2. Abels H.: The intial value problem for the Navier–Stokes equationswith a free surface in L q -Sobolev spaces. Adv. Diff. Eq. 10, 45–64 (2005)
3. Abels H.: On generalized solutions of two-phase flows for viscous incompressible fluis. Interfaces Free Bound 9, 31–65 (2007)
4. Abels H.: On the notion of generalized solutions of two-phase flows for viscous incompressible fluis. RISM Kokyuroku Bessatsu B1, 1–15 (2007)
5. Adams R.: Sobolev Spaces. Academic Press, London (1975)