1. Autopoiesis with or without cognition: defining life at its edge;M Bitbol;Journal of the Royal Society Interface,2004
2. Autopoiesis and cognition;P Bourgine;Artificial Life,2004
3. Destruction and creation (1976), and The essence of winning and Losing (1996) available via Defence and the National Interest;J R Boyd;Unpublished briefings under the name "A Discourse on winning and losing": Introduction,1976
4. Autopoiesis, agency and accident: criteria for the attribution of life;W Cameron;Systems Research and Behavioral Science,2001
5. Blind variation and selective retention in creative thought as in other knowledge processes;D T Campbell;Psychological Review,1960