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@article{DAN_1957_112_5_a13, author = {B. B. Kadomtsev}, title = {The invariance principle for a homogeneous medium of arbitrary shape}, journal = {Doklady Akademii Nauk}, pages = {831--834}, publisher = {mathdoc}, volume = {112}, number = {5}, year = {1957}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1957_112_5_a13/} }
B. B. Kadomtsev. The invariance principle for a homogeneous medium of arbitrary shape. Doklady Akademii Nauk, Tome 112 (1957) no. 5, pp. 831-834. http://geodesic.mathdoc.fr/item/DAN_1957_112_5_a13/