[1] Progress on HTTP-NG (1997-06-06 05:23:03 +09:00 版) <http://www.w3.org/Protocols/HTTP-NG/http-ng-status.html>

[2] Hypertext Transfer Protocol - Next Generation Overview (1999-12-01 17:55:19 +09:00 版) <http://www.w3.org/Protocols/HTTP-NG/>

[3] HTTP-NG Activity (2001-06-13 19:09:05 +09:00 版) <http://www.w3.org/Protocols/HTTP-NG/Activity.html>