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@article{INTO_2019_163_a1, author = {L. A. Kalyakin}, title = {On the frequency of a nonlinear oscillator}, journal = {Itogi nauki i tehniki. Sovremenna\^a matematika i e\"e prilo\v{z}eni\^a. Temati\v{c}eskie obzory}, pages = {15--24}, publisher = {mathdoc}, volume = {163}, year = {2019}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/INTO_2019_163_a1/} }
TY - JOUR AU - L. A. Kalyakin TI - On the frequency of a nonlinear oscillator JO - Itogi nauki i tehniki. Sovremennaâ matematika i eë priloženiâ. Tematičeskie obzory PY - 2019 SP - 15 EP - 24 VL - 163 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/INTO_2019_163_a1/ LA - ru ID - INTO_2019_163_a1 ER -
L. A. Kalyakin. On the frequency of a nonlinear oscillator. Itogi nauki i tehniki. Sovremennaâ matematika i eë priloženiâ. Tematičeskie obzory, Differential Equations, Tome 163 (2019), pp. 15-24. http://geodesic.mathdoc.fr/item/INTO_2019_163_a1/