(English) http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnbda/html/bdasamppet.asp
Http://www.microsoft.com/china/msdn/library/enterprisedevelopment/builddistapp/microsoft.netpetshop3.x-designpatternsandarchitectureOfThe.netPetShop.mspx (Chinese)
