TY  - RPRT
TI  - Generalization gradients and stimulus control in delayed matching-to-sample.
AU  - M Sidman
PY  - 1969
DO  - 10.1901/jeab.1969.12-745
UR  - https://pubmed.ncbi.nlm.nih.gov/5359623/
ID  - 5359623
ER  -