5Barreto C, Bullard V, Thomas E, et al. (2007 - 05 - 09 ). Web Services Business Process Execution Language Version 2. O. http: //www. oasis-open, org/committees/download, php/23964/wsbpel- v2.0-primer, htm.
6Colgrave J, Januszewski K. (2004 -01 -31 ). Using WSDL in a UDDI Registry, Version 2.0.2. http: //www. oasis-open. Org/committees/ uddi-spec/ doc/ tn/ uddi-spec-tc-tn-wsdl-v202-20040631, htm.
7OGC. (2007 -02- 19). OGC Web Services Common Specification. http : //www. opengeospatial, org/standards/common.
8Thomas E. 2005. Service-Oriented Architecture ( SOA ) : Concepts, Technology, and Design. N J, USA.. Prentice Hall.