seeASP.NET Server Control Licensing http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnaspp/html/aspnetcontrollicensing.asporDeveloping Microsoft ASP.NET Server Controls and Components (ISBN 0-7356-1582-9) by Nikhil Kothari and Vandana Datye http://www.microsoft.com/mspress/books/5728.asp
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnaspp/html/aspnetcontrollicensing.asporDeveloping Microsoft ASP.NET Server Controls and Components (ISBN 0-7356-1582-9) by Nikhil Kothari and Vandana Datye
http://www.microsoft.com/mspress/books/5728.asp