1. Jerome., S., Charles, S.: OWS 1.2 SOAP Experiment Report, Open Geospatial Consortium (2003)
2. Lieberman, J.: OWS1 Web Service Architecture v0.3, Open Geospatial Consortium (2003)
3. Kurt, B.: OpenGIS Reference Model, Open Geospatial Consortium (2003)
4. Beaujardiere, J.L.: Web Map Service (WMS) Implementation Specification v1.1.1, Open Geospatial Consortium (2002)
5. Panagiotis, V.: Web Feature Service (WFS) Implementation Specification v1.0.0, Open Geospatial Consortium (2002)