TY  - RPRT
TI  - Multiple limit cycles for predator-prey models.
AU  - J Hofbauer
AU  - J W So
PY  - 1990
DO  - 10.1016/0025-5564(90)90139-p
UR  - https://pubmed.ncbi.nlm.nih.gov/2134514/
ID  - 2134514
ER  -