@article{MZM_1976_19_5_a16,
     author = {S. B. Klimentov},
     title = {Deformability of surfaces of positive curvature},
     journal = {Matemati\v{c}eskie zametki},
     pages = {815--823},
     year = {1976},
     volume = {19},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1976_19_5_a16/}
}