%0 Journal Article %A S. V. Shil'man %T An application of the method of generating functions to the determination of the periodic motions of discontinuous nonlinear systems %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1977 %P 118-127 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1977_1_a14/ %G ru %F IVM_1977_1_a14