Async/Await FAQ
http://blogs.msdn.com/b/pfxteam/archive/2012/04/12/10293335.aspx
Asynchronous Programming with Async and Await (C# and Visual Basic)
https://msdn.microsoft.com/en-us/library/vstudio/hh191443.aspx
Whitepaper: Asynchrony in .NET
http://www.microsoft.com/en-us/download/details.aspx?id=14058
Parallel Programming AND Asynchronous Programming
原文：http://www.cnblogs.com/WCFGROUP/p/4909941.html