---+ SOAP Protocol

   * SOAP specification:
- SOAP specifications: http://www.w3.org/TR/soap/

- Basic Profile Version 1.0 to promote interoperability: http://www.ws-i.org/Profiles/BasicProfile-1.0-2004-04-16.html
   * Tutorial:
- http://www.w3schools.com/soap/default.asp
   * Examples:
- To find a list of webservices and examples on how to use them: http://www.bindingpoint.com/default.aspx

- A booking system for hotels and flights: http://ws.keyfortravel.com/webservices/k4thotelavail.asmx

You can take a look into
   * The ThirdProposal is based on SOAP.