TY  - RPRT
TI  - Stimulus definition in conditional discriminations.
AU  - I H Iversen
AU  - M Sidman
AU  - P Carrigan
PY  - 1986
DO  - 10.1901/jeab.1986.45-297
UR  - https://pubmed.ncbi.nlm.nih.gov/3711776/
ID  - 3711776
ER  -