ft.com/cms/s/0/ae4b031c-2ae6-11de-8415-00144feabdc0.html, 16.11.2010 4. Steinberger P.(2007). "Das spurlose Sterben". sueddeutsche.de. http://www.sueddeutsche.de/,ra13l5/wissen/artikel/352/105247/. 16.11.2010 5. Sully M. (2009) "Minutes of Northern Ireland Assembly" Theyworkforyou.com. http://www.theyworkforyou.com/ni/?id=2009-06-08.9.1. 18.11.2010 6. Howard J. (2007)"Colony Collapse Disorder Working Group". http://web.archive.org/web/20070214133122/http://www.ento.psu.edu/MAAREC/pressReleases/C olonyCollapseDisorderWG.html 15.11.2010 7. Sahba A.(2007). "The mysterious deaths of the honeybees". CNN Money http://money.cnn.com/2007/03/29/news/honeybees/. Retrieved 2007-04-04. 15.11.2010 8. (2010)"Study links bee decline to cell phones" CNN. 2010-06-30. http://www.cnn.com/2010/WORLD/europe/06/30/bee.decline.mobile.phones/index.html?hpt=C2. 14.11.2010 9. (2005) "GE and bee Colony Collapse Disorder -- science needed!". http://www.sierraclub
Ameerika Ühendriigid: Eider Press. Campagna, D., & Warner, T. (2004, Juuni). Software Review - IDRISI Kilimanjaro. Viimati külastatud: Jaanuar 10, 2011, Kättesaadav: asprs online: http://www.asprs.org/resources/software/review-06-2004/index.html Deaver, J. (2010, September). Intergraph® Introduces 3D Capabilities in Geospatial Software. Viimati külastatud: Jaanuar 9, 2011, Kättesaadav: Integraph: http://www.intergraph.com/assets/pressreleases/2010/09-02-2010.aspx GRASS GIS Reference Manual. (kuupäev puudub). Kasutamise kuupäev: 9. Jaanuar 2011. a., allikas GRASS Help: http://grass.osgeo.org/grass70/manuals/html70_user/index.html Hurt, T. (2007, August). Mapinfo materjale. Viimati külastatud: Jaanuar 9, 2011, Kättesaadav: Regio: http://www.regio.ee/?op=body&id=126 martinl. (2010, August 4). About GRASS. Viimati külastatud: Jaanuar 11, 2011, Kättesaadav: GRASS: Introduction: http://grass.osgeo
annaabi.ee 
