Links in MFC VC Abstract Class Experts articles

http://blogs.msdn.com/oldnewthing/archive/2004/04/28/122037.aspx.

http://msdn2.microsoft.com/en-us/library/0w2w91tf(VS.80).aspx

http://msdn2.microsoft.com/en-us/library/caz3zy5s.aspx

http://msdn2.microsoft.com/en-us/library/ct517hs4.aspx

http://msdn2.microsoft.com/en-us/library/z8ew2153.aspx

http://www.parashift.com/c++-faq-lite/abcs.html#faq-22.3

http://www.parashift.com/c++-faq-lite/multiple-inheritance.html#faq-25.8

http://www.softlookup.com/tutorial/vc++/vcu25fi.asp