@article{DAN_1957_112_3_a1,
     author = {I. N. Vekua},
     title = {Some problems concerning infinitesimal flexures of surfaces},
     journal = {Doklady Akademii Nauk},
     pages = {377--380},
     year = {1957},
     volume = {112},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1957_112_3_a1/}
}