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@article{IVM_1969_10_a7, author = {J. P. Konovalov}, title = {The almost periodic solutions of quasiharmonic systems with lag}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {62--69}, publisher = {mathdoc}, number = {10}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1969_10_a7/} }
J. P. Konovalov. The almost periodic solutions of quasiharmonic systems with lag. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 10 (1969), pp. 62-69. http://geodesic.mathdoc.fr/item/IVM_1969_10_a7/