@article{DAN_1960_134_6_a12,
     author = {V. N. Zhigulev},
     title = {The theory of the {\textquotedblleft}return{\textquotedblright} layer},
     journal = {Doklady Akademii Nauk},
     pages = {1313--1316},
     year = {1960},
     volume = {134},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_134_6_a12/}
}