TY  - RPRT
TI  - Variable-interval punishment during variable-interval reinforcement.
AU  - Y Filby
AU  - J B Appel
PY  - 1966
DO  - 10.1901/jeab.1966.9-521
UR  - https://pubmed.ncbi.nlm.nih.gov/5964507/
ID  - 5964507
ER  -