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@article{IVM_1975_6_a2, author = {V. I. Zhegalov}, title = {A~certain system of higher order equations of mixed type}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {25--35}, publisher = {mathdoc}, number = {6}, year = {1975}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1975_6_a2/} }
V. I. Zhegalov. A~certain system of higher order equations of mixed type. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 6 (1975), pp. 25-35. http://geodesic.mathdoc.fr/item/IVM_1975_6_a2/