TY  - RPRT
TI  - Twenty-four-hour patterns in human performance, subjective and physiological variables and differences between morning and evening active subjects.
AU  - J E Fröberg
PY  - 1977
DO  - 10.1016/0301-0511(77)90008-4
UR  - https://pubmed.ncbi.nlm.nih.gov/884171/
ID  - 884171
ER  -