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@article{IVM_1969_8_a0, author = {L. M. Berkovich}, title = {Selfadjoint differential equations and a~certain class of {Euler} equations}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {3--9}, publisher = {mathdoc}, number = {8}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1969_8_a0/} }
L. M. Berkovich. Selfadjoint differential equations and a~certain class of Euler equations. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 8 (1969), pp. 3-9. http://geodesic.mathdoc.fr/item/IVM_1969_8_a0/