000 00320nam a2200121 4500
008 160616s 000 0
245 _aNumerical analytic methods of investigating periodic solutions
100 _aSamoilenko, A.M
100 _aRonto, N.I
500 _aB33,11 L6
942 _cBK
_2BK4448
080 _a517.91 SAM
999 _c4448
_d4448