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@article{DAN_1969_184_1_a14, author = {V. S. Buslaev}, title = {Invariant description of {Maslov's} canonical operator}, journal = {Doklady Akademii Nauk}, pages = {59--62}, publisher = {mathdoc}, volume = {184}, number = {1}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1969_184_1_a14/} }
V. S. Buslaev. Invariant description of Maslov's canonical operator. Doklady Akademii Nauk, Tome 184 (1969) no. 1, pp. 59-62. http://geodesic.mathdoc.fr/item/DAN_1969_184_1_a14/