Correct reference

[gary (Gary Cottrell)]

I get enough requests for this that I feel it is necessary to post
it here. Sorry if you don't care!

Somehow, the correct reference for the image compression paper we put in
Sharkey's editied volume has been scrambled "out there". Here it is:
Cottrell, G., Munro, P. and Zipser D. (1989) Image compression by back
propagation: A demonstration of extensional programming. In Noel
Sharkey (Ed.), \fIModels of Cognition: A review of Cognitive Science,
Vol. 1\fP, Norwood: Ablex.