@article{JMAG_2011_7_a2,
     author = {Shichang Shu},
     title = {Space-like submanifolds with parallel normalized mean curvature vector field in {de~Sitter} space},
     journal = {\v{Z}urnal matemati\v{c}eskoj fiziki, analiza, geometrii},
     pages = {352--369},
     publisher = {mathdoc},
     volume = {7},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JMAG_2011_7_a2/}
}