WebReview: XHTML - Our Last, Best Hope for Clean Code
- Article about the need for XHTML and the differences from HTML.
- http://www.ddj.com/184412769

XML.com - XHTML: Three Namespaces or One?
- Discussion into the three DTDs of XHTML.
- http://www.xml.com/pub/a/1999/10/names/namespaces.html

XHTML: HTML Merges With XML
- Article from Dev.x WebBuilder, outlining XHTML.
- http://www.devx.com/webdev/article/16938

About - What is XHTML?
- An article explaining XHTML in relation to XML and HTML.
- http://webdesign.about.com/cs/xhtmlxml/a/aa013100a.htm

A List Apart: Rated XHTML
- Article by Peter-Paul Koch: "XHTML isn't about the present, it's about the future."
- http://www.alistapart.com/stories/xhtml/

W3C: XHTML 1.0 Press Release
- The World Wide Web Consortium's official press release for XHTML 1.0.
- http://www.w3.org/2000/01/xhtml-pressrelease.html.en

W3C: XHTML 1.0 Testimonials
- Testimonials for XHTML 1.0.
- http://www.w3.org/2000/01/xhtml-test.html