TY  - RPRT
TI  - Concurrent fixed-ratio and avoidance responding in the squirrel monkey.
AU  - A C Catania
AU  - J F Deegan
AU  - L Cook
PY  - 1966
DO  - 10.1901/jeab.1966.9-227
UR  - https://pubmed.ncbi.nlm.nih.gov/16811289/
ID  - 16811289
ER  -