@article{GDZPPN002214954,
title = {Bernstein-type theorems for space-like surfaces with parallel mean curvature.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {485},
year = {1997},
pages = {189-198},
zbl = {0879.53046},
url = {http://dml.mathdoc.fr/item/GDZPPN002214954}
}
Xin, Y.L.; Ye, Rugang. Bernstein-type theorems for space-like surfaces with parallel mean curvature.. Journal für die reine und angewandte Mathematik, Tome 485 (1997) pp. 189-198. http://gdmltest.u-ga.fr/item/GDZPPN002214954/