[1] [CITE[PEP - An Extension Mechanism for HTTP]]
([TIME[1999-01-25 02:36:47 +09:00]] 版)
<http://www.w3.org/Protocols/PEP/>

[2] [CITE[PEP - an Extension Mechanism for HTTP]]
( ([TIME[1998-04-07 21:31:46 +09:00]] 版))
<http://www.w3.org/TR/WD-http-pep#_Toc404743958>