00350nam a2200121Ia 4500082002100000100002400021245006200045260003400107300001600141500004300157500000500200700002300205  a515.35bSt796.AM  aStarzhinskii, V. M.  aApplied methods in the theory of nonlinear oscillationsb  aMoscowbMIR Publicationc1980  a263p. Index  a"Tr. from the Russian by V. I. Kisin".  a  aKisin, V. I. ; tr.