000 00291nam a2200109 4500
008 160616s 000 0
245 _aApplied methods in the theory of nonlinear oscillations
100 _aStarzhinskii, V.M
500 _aB33,11 M0
942 _cBK
_2BK4451
080 _a517.927.4 STA
999 _c4451
_d4451