@article{ASUO_2015_XXIII_2_a24,
     author = {Yaning Wang and Ximin Liu},
     title = {Complete spacelike hypersurfaces with positive r-th mean curvature in a {semi-Riemannian} warped product},
     journal = {Analele Universit\u{a}\c{t}ii "Ovidius" Constan\c{t}a Seria Matematic\u{a}},
     publisher = {mathdoc},
     volume = {XXIII},
     number = {2},
     year = {2015},
     url = {http://geodesic.mathdoc.fr/item/ASUO_2015_XXIII_2_a24/}
}