http://www.institute.redlands.edu/msgis/students/cohort8/GIS691/documents/mcnoleg1996.pdf

Believe it or not, this is hosted on ScienceDirect!

I found the diagrams particularly helpful.

Dr Morgan (Belford)

Brilliant!!

Ha! Very nice indeed. I have circulated this widely among those who I believe are in need of cheering up on a monday afternoon!

I had that sent to me when it came out first, its a fandabbydosey article!