The PDF I originally snagged that from went offline or behind a paywall.
http://ecomodder.com/forum/showthrea...les-32406.html —here Cycle posted a link to a later iteration of the PowerPoint slide presentation. On page 8 is a different version of the same slide. I just downloaded it again to verify it is available.
http://www2.warwick.ac.uk/fac/sci/wm...tion120221.pdf