@article{DAN_1970_192_2_a1,
     author = {O. Bondareva},
     title = {A theorem on externally stable sets},
     journal = {Doklady Akademii Nauk},
     pages = {259--261},
     publisher = {mathdoc},
     volume = {192},
     number = {2},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1970_192_2_a1/}
}