Logic programming, graphics and infinite terms
P. R. Eggert, K. P. Chow
Department of Computer Science University of California, Santa Barbara UCSB
DoCS TR 83-02
June 1983.
A copy of this document and accompanying pictures can be found here: glog.tar.gz (380k).
(Paul Eggert's email address (as of 1999) is eggert at twinsun.com).
The Prolog code that generates the image can be found here.