http://www.casa.ucl.ac.uk/news/newsStory.asp?ID=197
Enjoy
Michael Batty
Centre for Advanced Spatial Analysis (CASA)
University College London
1-19 Torrington Place
LONDON WC1E 6BT, UK
Tel 44 (0) 207 679 1782/1781 Mobile 44 (0) 7768 423
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http://www.casa.ucl.ac.uk/