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@article{MP_1959_a28, author = {M. K. Fage}, title = {{\CYRM}.\,{\CYRK}.~{\CYRF}{\cyra}{\cyrg}{\cyre}. {{\CYREREV}{\cyrk}{\cyrv}{\cyri}{\cyrv}{\cyra}{\cyrl}{\cyre}{\cyrn}{\cyrt}{\cyrn}{\cyro}{\cyrs}{\cyrt}{\cyrsftsn}} {\cyro}{\cyrb}{\cyrery}{\cyrk}{\cyrn}{\cyro}{\cyrv}{\cyre}{\cyrn}{\cyrn}{\cyrery}{\cyrh} {\cyrl}{\cyri}{\cyrn}{\cyre}{\cyrishrt}{\cyrn}{\cyrery}{\cyrh} {\cyrd}{\cyri}{\cyrf}{\cyrf}{\cyre}{\cyrr}{\cyre}{\cyrn}{\cyrc}{\cyri}{\cyra}{\cyrl}{\cyrsftsn}{\cyrn}{\cyrery}{\cyrh} {\cyro}{\cyrp}{\cyre}{\cyrr}{\cyra}{\cyrt}{\cyro}{\cyrr}{\cyro}{\cyrv}}, journal = {Matematicheskoe Prosveshchenie}, pages = {236--239}, publisher = {mathdoc}, year = {1959}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MP_1959_a28/} }
M. K. Fage. М.\,К.~Фаге. Эквивалентность обыкновенных линейных дифференциальных операторов. Matematicheskoe Prosveshchenie, Математика, ее преподавание, приложения и история (1959), pp. 236-239. http://geodesic.mathdoc.fr/item/MP_1959_a28/