TY  - RPRT
TI  - Discrimination and operant extinction.
AU  - H M HURWITZ
AU  - J CUTTS
PY  - 1957
DO  - 10.1111/j.2044-8295.1957.tb00602.x
UR  - https://pubmed.ncbi.nlm.nih.gov/13426492/
ID  - 13426492
ER  -