TY  - RPRT
TI  - LEVELS OF PRACTICE, LEARNING CURVES, AND SYSTEM VALUES FOR HUMAN PERFORMANCE ON COMPLEX TASKS.
AU  - R SEIBEL
PY  - 1964
DO  - 10.1177/001872086400600309
UR  - https://pubmed.ncbi.nlm.nih.gov/14255081/
ID  - 14255081
ER  -