@article{DAN_1964_157_4_a14,
     author = {V. T. Fomenko},
     title = {Infinitesimal deformations of surfaces with sleeve junctions},
     journal = {Doklady Akademii Nauk},
     pages = {810--813},
     year = {1964},
     volume = {157},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_157_4_a14/}
}