ISO 19100 is a series of international standards for data exchange format, metadata, and methodologies for geospatial data. An application is in geographic information systems.
ISO site, search on "191**" (yields 49 standards in this series), http://www.iso.org/iso/search.htm?qt=191**&searchSubmit=Search&sort=rel&type=simple&published=on
Jang, Sung-Gheel, and Tschangho John Kim. 2006. "Modeling an interoperable multimodal travel guide system using the ISO 19100 series of international standards." (abstract) http://portal.acm.org/citation.cfm?id=1183491
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