TY  - RPRT
TI  - Spontaneous rhythms in physiological control systems.
AU  - B W Hyndman
AU  - R I Kitney
AU  - B M Sayers
PY  - 1971
DO  - 10.1038/233339a0
UR  - https://pubmed.ncbi.nlm.nih.gov/4940430/
ID  - 4940430
ER  -