Geodesic
The nature of conditions for a center
Izvestiâ vysših učebnyh zavedenij. Matematika, no. 6 (1964), pp. 116-122 
N. V. Medvedev. The nature of conditions for a center. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 6 (1964), pp. 116-122. http://geodesic.mathdoc.fr/item/IVM_1964_6_a14/
@article{IVM_1964_6_a14,
     author = {N. V. Medvedev},
     title = {The nature of conditions for a center},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {116--122},
     year = {1964},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1964_6_a14/}
}
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EP  - 122
IS  - 6
UR  - http://geodesic.mathdoc.fr/item/IVM_1964_6_a14/
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ID  - IVM_1964_6_a14
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%P 116-122
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%G ru
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