1. A.L. Albujer, L.J. Alías, Calabi–Bernstein results for maximal surfaces in Lorentzian product spaces, Preprint, 2006. Available at http://arxiv.org/abs/0709.4363
2. On the Calabi–Bernstein theorem for maximal hypersurfaces in the Lorentz–Minkowski space;Alías;Pub. de la RSME,2003
3. Uniqueness of complete spacelike hypersurfaces of constant mean curvature in generalized Robertson–Walker spacetimes;Alías;Gen. Relativity Gravitation,1995
4. Isolated maximal surfaces in spacetime;Brill;Comm. Math. Phys.,1976
5. Examples of Bernstein problems for some nonlinear equations;Calabi,1970