1. AgResearch. Farm plan prototype for SLUI, retrievable online from the New Zealand Association of Resource Management (2005),
http://www.nzarm.org.nz/KinrossWholeFarmPlan_A4_200dpi_secure.pdf
2. LNBIP;R. Al-Kamha,2008
3. Buneman, P., Davidson, S., Fan, W., Hara, C., Tan, W.: Keys for XML. Computer Networks 39(5), 473–487 (2002)
4. Fornari, M.R., Iochpe, C.: Mapping of conceptual object oriented models to gml. In: International Conference on IADIS WWW/Internet, pp. 444–451 (2002)
5. Lecture Notes in Computer Science;M. Franceschet,2009