TY  - RPRT
TI  - Sleepiness and shift work: field studies.
AU  - T Akerstedt
AU  - L Torsvall
AU  - M Gillberg
PY  - 1982
DO  - 10.1093/sleep/5.s2.s95
UR  - https://pubmed.ncbi.nlm.nih.gov/6760335/
ID  - 6760335
ER  -