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@article{DAN_1980_252_5_a4, author = {I. A. Kipriyanov and L. A. Ivanov}, title = {Hadamard's method for some classes of hyperbolic equations}, journal = {Doklady Akademii Nauk}, pages = {1045--1048}, publisher = {mathdoc}, volume = {252}, number = {5}, year = {1980}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1980_252_5_a4/} }
I. A. Kipriyanov; L. A. Ivanov. Hadamard's method for some classes of hyperbolic equations. Doklady Akademii Nauk, Tome 252 (1980) no. 5, pp. 1045-1048. http://geodesic.mathdoc.fr/item/DAN_1980_252_5_a4/