I kept meaning to post about this, but other things distracted me.
Back in August of 2009, I published a paper in the American Journal of Botany that discussed some software I wrote to do basic tree and forest growth simulations. I used Context Free as a graphical backend to help visualize things.
http://www.amjbot.org/cgi/content/abstract/96/8/1430
-STH
Used Context Free in a scientific paper
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