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Burry, M.C., J.R. Burry, G.M. Dunlop and A. Maher (2001). "Drawing Together Euclidean and Topological Threads (pdf)"(PDF). Presented at SIRC 2001 – the Thirteenth Annual Colloquium of the Spatial Information Research Center. Dunedin, New Zealand: University of Otago. Archived from the original(PDF) on 2007-10-31. Retrieved 2007-11-28.{{cite web}}: CS1 maint: multiple names: authors list (link)