Module One Sources

Gonzalez-Barahona, Jesus M. "A brief history of open source software." 2000-04-24. accessed 2008. http://eu.conecta.it/paper/brief_history_open_source.html.

GRASS GIS website. GRASS. accessed 2008. http://grass.osgeo.org/.

Lo, C.P. and Albert K. W. Young. Concepts and Techniques in Geographic Information Systems. second edition. Pages 85, 90, 105. Pearson Prentice Hall. London: 2007.

Map Window GIS website. Map Window GIS. accessed 2008. http://www.mapwindow.org/.

Open Geospatial Consortium website. OGC. accessed 2008. http://www.opengeospatial.org/

Open Source Initiative website. OSI. accessed 2008. http://opensource.org/.

Quantum GIS website. QGIS. accessed 2008. http://www.qgis.org/.

UDIG website. UDIG. accessed 2008. http://udig.refractions.net/.

Wikipedia. "Free Software Movement" accessed 2008. http://en.wikipedia.org/wiki/Free_software_movement.