1. Burrogh, P.A., Frank, A.U. (eds.): Geographic Objects with Interminate Bounaries. Taylor & Francis Inc., Bristol (1996)
2. Internatioanal Cartographic Association;S. Guptill,1995
3. Jacobsson, A., Giversen, J.: Eurogeographics (2007),
http://www.eurogeographics.org/documents/Guidelines_ISO19100_Quality.pdf
(retrieved 2009)
4. XXIII FIG Congres - Shaping the Change;G. Joos,2006
5. Miles, L.D.: Techniques Of Value Analysis Engeneering, 3rd edn. Eleanor Miles Walker, USA (1989)