TY  - RPRT
TI  - Chaos in a parametrically damped pendulum.
AU  - HJ Smith
AU  - JA Blackburn
PY  - 1989
DO  - 10.1103/physreva.40.4708
UR  - https://pubmed.ncbi.nlm.nih.gov/9902718/
ID  - 9902718
ER  -