@article{10_1017_S0017089505002818,
     author = {BRASIL, A. and CHAVES, ROSA M. B. and COLARES, A. G.},
     title = {RIGIDITY {RESULTS} {FOR} {SUBMANIFOLDS} {WITH} {PARALLEL} {MEAN} {CURVATURE} {VECTOR} {IN} {THE} {DE} {SITTER} {SPACE}},
     journal = {Glasgow mathematical journal},
     pages = {1--10},
     year = {2006},
     volume = {48},
     number = {1},
     doi = {10.1017/S0017089505002818},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089505002818/}
}