TY  - RPRT
TI  - Performance changes during the sustained operation of a complex psychomotor task.
AU  - V S Ellingstad
AU  - N W Heimstra
PY  - 1970
DO  - 10.1080/00140137008931195
UR  - https://pubmed.ncbi.nlm.nih.gov/5532301/
ID  - 5532301
ER  -