[1]
[CITE[The Cougar Document Type Definition]] <http://www.w3.org/MarkUp/Cougar/dtd.html>
([[名無しさん]])

[2]
[CITE[Project: Cougar]] <http://www.w3.org/MarkUp/Cougar/>
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[3]
[CITE[Chapter 2]] ([CODE[1998-05-20 00:22:16 +09:00]] 版) <http://www.w3.org/People/Raggett/book4/ch02.html>
([[名無しさん]])

[4]
[CITE[Chapter 2]] ([CODE[1998-05-20 00:22:16 +09:00]] 版) <http://www.w3.org/People/Raggett/book4/ch02.html>
([[名無しさん]])


[5]
[CITE[The W3 Consortium Takes Leadership Role in the Development of HTML]] ([TIME[1996-12-09 11:46:16 +09:00]] 版) <http://www.w3.org/MarkUp/960304_News>
([[名無しさん]])