1. Sonnet, J.: OWS 2 Common Architecture: WSDL SOAP UDDI. Open GIS Consortium Inc., Canada, p. 76 (2004)
2. Arliss Whiteside: OpenGIS® Web Services Common Specification. Open GIS Consortium Inc., Canada, p. 106 (2005)
3. OGC 02-069, OpenGIS implementation Specification: Web Map Service,
http://www.opengeospatial.org/docs/01-068r3.pdf
4. OGC 02-058: OpenGIS implementation Specification: Web Feature Service,
https://portal.opengeospatial.org/files/?artifact_id=7176
5. OGC 03-006r3: OpenGIS implementation Specification: Web Coverage Service,
https://portal.opengeospatial.org/files/?artifact_id=3837