TY  - RPRT
TI  - Acquisition and extinction of problem-solving set.
AU  - R A GARDNER
AU  - W N RUNQUIST
PY  - 1958
DO  - 10.1037/h0040619
UR  - https://pubmed.ncbi.nlm.nih.gov/13513948/
ID  - 13513948
ER  -