pdf: https://pdfs.semanticscholar.org/f67a/d15db33679c5fa69f15294cf176c0b7e9f10.pdf?_ga=2.139316657.300497662.1563355095-1219760354.1559644806
Autopoeisis, structural coupling and cognition: a history of these and other notions in the biology of cognition
Ugly full text: http://www.isss.org/maturana.htm