TY  - RPRT
TI  - Locating the difficulty in insight problems: individual and sex differences.
AU  - N R Maier
AU  - G G Casselman
PY  - 1970
DO  - 10.2466/pr0.1970.26.1.103
UR  - https://pubmed.ncbi.nlm.nih.gov/5452584/
ID  - 5452584
ER  -