[1] Guidelines for Web Content Transformation Proxies 1.0 ( ( 版)) <http://www.w3.org/TR/2010/NOTE-ct-guidelines-20101026/>
[2] Guidelines for Web Content Transformation Proxies 1.0 () <https://www.w3.org/TR/ct-guidelines/>
[3] Content Transformation Landscape 1.0 () <https://www.w3.org/TR/2009/NOTE-ct-landscape-20091027/>