@article{DAN_1964_158_6_a3,
     author = {V. I. Diskant},
     title = {Stability in a theorem of {Liebmann's}},
     journal = {Doklady Akademii Nauk},
     pages = {1257--1259},
     publisher = {mathdoc},
     volume = {158},
     number = {6},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_158_6_a3/}
}