TY  - RPRT
TI  - Flight crew sleep during multiple layover polar flights.
AU  - M Sasaki
AU  - Y S Kurosaki
AU  - C L Spinweber
AU  - R C Graeber
AU  - T Takahashi
PY  - 1993
UR  - https://pubmed.ncbi.nlm.nih.gov/8357319/
ID  - 8357319
ER  -