EF4

http://www.cnblogs.com/xray2005/category/189491.html

http://kb.cnblogs.com/zt/ef/

http://www.cnblogs.com/wlflovenet/archive/2011/07/23/mvcandef.html

http://www.cnblogs.com/carysun/archive/2009/03/20/repository.html

http://www.cnblogs.com/imythu/archive/2012/06/11/mvc-ef-design3.html

http://www.codeproject.com/Articles/207820/The-Repository-Pattern-with-EF-code-first-Dependen