TY  - RPRT
TI  - Learning set with intra-problem stimulus variation.
AU  - M Goldstein
AU  - R J Weber
PY  - 1965
DO  - 10.2466/pms.1965.21.3.799
UR  - https://pubmed.ncbi.nlm.nih.gov/5855922/
ID  - 5855922
ER  -