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[1] QPR Software Plc web site, http://www.qpr.com.
[2] QPR Customer Care, contact information available in http://www.qpr.com/support/.
[3] Microsoft MSDN, http://msdn.microsoft.com/.
[4] Microsoft COM Technologies, http://www.microsoft.com/com/tech/com.asp.
[5] W3Schools Online Web Tutorials web site, http://www.w3schools.com/
[6] World Wide Web Consortium, http://www.w3.org/