TY  - RPRT
TI  - Concurrent discrimination learning in chimpanzees.
AU  - K J HAYES
AU  - R THOMPSON
AU  - C HAYES
PY  - 1953
DO  - 10.1037/h0055072
UR  - https://pubmed.ncbi.nlm.nih.gov/13044868/
ID  - 13044868
ER  -