MSDN: How to Encode XML Data - Article explaining how character encoding works and specifically how it works in XML and the MSXML DOM. - http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnxml/html/xmlencodings.asp
XML.com: Namespace Myths Exploded - This article discusses a number of myths that have arisen around XML namespaces, examining possible sources, clarifying what the recommendation says about them, and pointing out ways to resolve the issues they raise. By Ronald Bourrett. - http://www.xml.com/pub/a/2000/03/08/namespaces/
XML.com: Namespaces by Example - A first look at this W3C Recommendation on Namespaces in XML. By Tim Bray. - http://www.xml.com/pub/a/1999/01/namespaces.html
XML.com: Namespace Nuances - Questions and answers about Namespaces in XML. By John E. Simpson. - http://www.xml.com/pub/a/2001/07/05/namespaces.html
Zvon.org: Namespace Tutorial - Understand Namespaces in XML using these 14 examples presented here. - http://www.zvon.org/xxl/NamespaceTutorial/Output/index.html
XML Namespaces FAQ - Comprehensive site of questions and answers about Namespaces in XML as maintained by Ronald Bourret. - http://www.rpbourret.com/xml/NamespacesFAQ.htm
XML Namespace Related-resource Language (XNRL) - an HTML-based markup language designed to contain a human-readable description of an XML namespace as well as pointers to multiple resources related to that namespace. Examples of such related resources include schemas, stylesheets, human-readable documen - http://www.textuality.com/xml/xnrl.html
XML Cover Pages: Namespaces in XML - A collection of whitepapers, perspectives and history on XML namespaces, including links, references and contacts. - http://xml.coverpages.org/namespaces.html
W3Schools.com: XML Namespaces - XML Namespaces provides a method to avoid element name conflicts. This page gives examples and solutions. - http://www.w3schools.com/xml/xml_namespaces.asp
Namespaces in XML (alternate explanation) - An attempt by James Clark at a less confusing alternative explanation of the mechanism described in the XML Namespaces Recommendation. - http://www.jclark.com/xml/xmlns.htm
Namespaces in XML - XML namespaces provide a simple method for qualifying element and attribute names used in Extensible Markup Language documents by associating them with namespaces identified by URI references. (W3C Recommendation 14 January 1999) - http://www.w3.org/TR/REC-xml-names