TY  - RPRT
TI  - Concurrent activities and instructed human fixed-interval performance.
AU  - D Barnes
AU  - M Keenan
PY  - 1993
DO  - 10.1901/jeab.1993.59-501
UR  - https://pubmed.ncbi.nlm.nih.gov/8315367/
ID  - 8315367
ER  -