TY  - RPRT
TI  - Aperiodic behaviour of a non-linear oscillator.
AU  - Baker, N. H.
AU  - Moore, D. W.
AU  - Spiegel, E. A.
PY  - 1971
UR  - https://ntrs.nasa.gov/citations/19720030792
ID  - 19720030792
ER  -