[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/