TY  - BOOK
AU  - Cartwright, M. L.
ED  - Symposium on nonlinear vibrations
TI  - Almost periodic solutions of systems of two periodic equations
PY  - 1961///
CY  - Kiev
PB  - Inst. of mathematics, Acad. of sciences of the Ukrainian SSR
KW  - Мт-52
KW  - rubbk
N2  - Библиогр.: с. 14-15
ER  -