TY  - RPRT
TI  - Overt vs covert problem solving, transfer effects, and programming sequence: I: Inverted triangles.
AU  - L S Tsai
PY  - 1987
DO  - 10.2466/pms.1987.65.1.313
UR  - https://pubmed.ncbi.nlm.nih.gov/3684465/
ID  - 3684465
ER  -