TY  - RPRT
TI  - Observations from unperturbed closed loop systems cannot indicate causality.
AU  - H van der Kooij
AU  - F C T van der Helm
PY  - 2005
DO  - 10.1113/jphysiol.2005.569001
UR  - https://pubmed.ncbi.nlm.nih.gov/16322059/
ID  - 16322059
ER  -