@article{DAN_1984_275_6_a3,
     author = {V. I. Vlasov},
     title = {The variation of a mapping function in the deformation of the},
     journal = {Doklady Akademii Nauk},
     pages = {1299--1302},
     publisher = {mathdoc},
     volume = {275},
     number = {6},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1984_275_6_a3/}
}