[1] Bellettini, G., Fusco, G., Some aspects of the dynamic of V = H – $\\\\overline{H}$, J. Differential Equations, 157 (1999), 206-246.
[2] Huisken, G., The volume preserving mean curvature flow, J. Reine Angew. Math., 382 (1987), 35-48.
[3] Kikuchi, N., An approach to the construction of Morse flows for variational functionals, in "Nematics—Mathematical and Physical Aspects", ed.: Coron, J.-M., Ghidaglia, J.-M., Hélein, F., NATO Adv. Sci. Inst. Ser. C: Math. Phys. Sci., 332, Kluwer Acad. Publ., Dodrecht-Boston-London, 1991, 195-198.
[4] Ladyzhenskaya, O. A., Solonnikov, V. A., Ural'tseva, N. N., Linear and Quasilinear Equations of Parabolic Type, Translations of the A.M.S. 23, Providence R.I., 1968.
[5] Nagasawa, T., Omata, S., Discrete Morse semiflows of a functional with free boundary, Adv. Math. Sci. Appl., 2 (1993), 147-187.