@article{DAN_1960_134_5_a6,
     author = {A. G. Teterev},
     title = {Caplygin{\textquoteright}s theorem for elliptic equations},
     journal = {Doklady Akademii Nauk},
     pages = {1024--1026},
     publisher = {mathdoc},
     volume = {134},
     number = {5},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_134_5_a6/}
}