@article{DAN_1979_249_6_a0,
     author = {N. G. Ananov},
     title = {Riemannian manifolds with boundary having mean curvature that is bounded below},
     journal = {Doklady Akademii Nauk},
     pages = {1289--1291},
     publisher = {mathdoc},
     volume = {249},
     number = {6},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1979_249_6_a0/}
}