The existence of several periodic solutions to equations of Liénard type
Izvestiâ vysših učebnyh zavedenij. Matematika, no. 3 (1987), pp. 3-5
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@article{IVM_1987_3_a0,
author = {V. V. Amel'kin and V. \`E. Zhavnerchik},
title = {The existence of several periodic solutions to equations of {Li\'enard} type},
journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
pages = {3--5},
year = {1987},
number = {3},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/IVM_1987_3_a0/}
}
V. V. Amel'kin; V. È. Zhavnerchik. The existence of several periodic solutions to equations of Liénard type. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 3 (1987), pp. 3-5. http://geodesic.mathdoc.fr/item/IVM_1987_3_a0/