@article{DAN_1964_154_3_a9,
     author = {I. S. Ovchinnikov and G. D. Suvorov},
     title = {Transformations of the {Dirichlet} integral and space mappings},
     journal = {Doklady Akademii Nauk},
     pages = {523--526},
     publisher = {mathdoc},
     volume = {154},
     number = {3},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_154_3_a9/}
}