TY  - RPRT
TI  - Biorhythms: fact or superstition?
AU  - D K Winstead
AU  - B D Schwartz
AU  - W E Bertrand
PY  - 1981
DO  - 10.1176/ajp.138.9.1188
UR  - https://pubmed.ncbi.nlm.nih.gov/7270722/
ID  - 7270722
ER  -