One older paper specifically focused on ccr is available. Much
of the text from it is scattered around this site. The uncompressed
Postscript is obscenely huge due to bad resolution choices in the
Another paper raves more generally but uses ccr for examples:
Ackley, D. H. (1996).
- ccr: A Network of Worlds for
Research. In Artificial Life V, MIT Press. PDF (500K), Compressed Postscript (606K), Postscript (5.3M)
- Ackley, D. H. (2000).
- Real Artificial
Life: Where we may be. To appear in Artificial Life VII