@article{GDZPPN002068915,
title = {On the Gauss curvature of maximal surfaces in the 3-dimensional Lorentz-Minkowski space.},
journal = {Commentarii mathematici Helvetici},
volume = {69},
year = {1994},
pages = {1-4},
zbl = {0810.53050},
url = {http://dml.mathdoc.fr/item/GDZPPN002068915}
}
Romero, Alfonso; Estudillo, F. J.M. On the Gauss curvature of maximal surfaces in the 3-dimensional Lorentz-Minkowski space.. Commentarii mathematici Helvetici, Tome 69 (1994) pp. 1-4. http://gdmltest.u-ga.fr/item/GDZPPN002068915/