TY - BOOK AU - Bogojavlenskij, O. I. TI - Nonlinear oscillation regimes in some physical problems T2 - Preprint PY - 1977/// CY - Chernogolovka KW - Колебания нелинейные KW - nlr_sh1 KW - В31 KW - rubbk N2 - Библиогр.: с. 16 ER -