TY  - RPRT
TI  - Extra-task performance as a measure of learning a primary task.
AU  - H P BAHRICK
AU  - M NOBLE
AU  - P M FITTS
PY  - 1954
DO  - 10.1037/h0059267
UR  - https://pubmed.ncbi.nlm.nih.gov/13211942/
ID  - 13211942
ER  -