[1] K. Akutagawa, On spacelike hypersurfaces with constant mean curvature in the de Sitter space, Math. Z., 196 (1987), pp. 12-19.
[2] L.J. Alias, On the stability index of minimal and constant mean curvature hypersurfaces in spheres, Rev. de la Uni. Mat. Argen., 47 (2006), pp. 39-61.
[3] J.L.M. Barbosa and M. de Carmo, stability of hypersurfaces with constant mean curvature, Math. Z., 185 (1984), pp. 339-353.
[4] J.L.M. Barbosa, M. de Carmo and J. Eschenberg, stability of hypersurfaces of constant mean curvature in Riemannian manifolds, Math. Z., 197 (1988), pp. 123-138.
[5] A. Barros, A. Brasil and A. Caminha, stability of spacelike hypersurfaces in foliated spacetimes, Diff. Geom. and Appl., 26 (2008), pp. 357-365.
[6] A. Barros and P. Sousa, Estimate for index of closed minimal hypersurfaces of spheres, Kodai Math. J., 32 (2009), pp. 442-449.
[7] E. Calabi, Examples of Bernstein problems for some nonlinear equations, Global Analysis, 15 (1970), pp. 223-230.
[8] A. Caminha, On spacelike hypersurfaces of constant sectional curvature lorentz manifolds, J. Geom. Phys., 56:7 (2006), pp. 1144-1174.
[9] S.Y. Cheng and S.T. Yau, Maximal spacelike hypersurfaces in the Lorentz-Minkwski spaces, Ann. Math., 104 (1976), pp. 407-419.
[10] S.Y. Cheng and S.T. Yau, Hypersurfaces with constant scalar curvature, Math. Ann., 225 (1977), pp. 195-204.
[11] G. Colombo, J.A.S. Pelegrin and M. Rigoli Stable maximal hypersurfaces in Lorentzian spacetimes, (2019), doi:10.1016/j.na.2018.09.009.
[12] A.J. Goddard, Some remarks on the existence of spacelike hypersurfaces of constant mean curvature, Math. Proc. Cambridge. Philos. Soc., 82 (1977), pp. 489-495.
[13] T. Ishihara, Maximal spacelike submanifolds of a pseudo-Riemannian space of constant curvature, Mishigan Math. J., 35 (1988), pp. 345-352.
[14] H. Li, Global rigidity theorems of hypersurfaces, Ark. Mat., 35 (1997), pp. 327-351.
[15] S. Montiel, An integral inequality for compact spacelike hypersurfaces in de Sitter space and applications to the case of constant mean curvature, Indiana Univ. Math. J., 37 (1988), pp. 909-917.
[16] S. Nishikawa, On maximal spacelike hypersurfaces in a Lorentzian manifold, Nogaya Math. J., 95 (1984), pp. 117-124.
[17] B. O'Neill, Semi-Riemannian geometry with applicatins to relativity, Acad. Press Inc., 1983.
[18] F. Pashaie and S.M.B. Kashani, Spacelike hypersurfaces in Riemannian or Lorentzian space forms satisfying $ L_kx=Ax+b$, Bull. Iran. Math. Soc., 39:1 (2013), pp. 195-213.
[19] J. Ramanathan, Complete space-like hypersurfaces of constant mean curvature in de Sitter space, Indiana Univ. Math., 36 (1987), pp. 349-359.
[20] J. Simons, Minimal varieties in Riemannian manifolds, Ann. Math., 88 (1968), pp. 62-105.
[21] Y. Xin, Minimal Submanifolds and Related Topics, World Scientific Publishing Co., Singapore, 2003.