1. Alías, L.J., Estudillo, F.J.M., Romero, A.: Spacelike submanifolds with parallel mean curvature in pseudo-Riemannian space forms. Tsukuba J. Math. 21, 169–179 (1997)
2. Beem, J.K., Ehrlich, P.E., Easley, K.L.: Global Lorentzian Geometry. Pure and Applied Mathematics. Marcel Dekker, New York (1996)
3. Bektaş, M., Ergüt, M.: Compact space-like submanifolds with parallel mean curvature vector of a pseudo-Riemannian space. Acta Univ. Palacki. Olomuc. Fac. Rerum Nat. Math. 38, 17–24 (1999)
4. Bray, H., Hayward, S., Mars, M., Simon, W.: Generalized inverse mean curvature flows in spacetime. Commun. Math. Phys. 272, 119–138 (2007)
5. Cao, X.-F.: Pseudo-umbilical spacelike submanifolds in the indefinite space form. Balk. J. Geom. Appl. 6, 117–121 (2001)