@article{MZ_1991__206_1_174229,
     author = {Qing-ming Cheng},
     title = {Complete space-like submanifolds in a de {Sitter} space with parallel mean curvature vector.},
     journal = {Mathematische Zeitschrift},
     pages = {333--340},
     publisher = {mathdoc},
     volume = {206},
     number = {1},
     year = {1991},
     zbl = {0695.53042},
     url = {http://geodesic.mathdoc.fr/item/MZ_1991__206_1_174229/}
}