Cocoon-URL is a weekly summary of interesting links posted to the mailing lists of the Cocoon project. Luminas often use Cocoon as part of the internet applications that they develop for their clients.

DOM Document Fragment in Xerces
http://xml.apache.org/xerces2-j/javadocs/api/org/w3c/dom/DocumentFragment.html

Cocooncenter lets you download its source.
http://www.cocooncenter.org/

jCVS "a reasonable GUI interface" to CVS
http://www.jcvs.org/

"many projects are using Cocoon"
http://www.xml.com/lpt/a/2002/02/13/cocoon2.html

XPL is an XML Pipeline Definition Language developed by Orbeon. The OXF implementation is not free software, though.
http://www.orbeon.com/oxf/whitepaper.xhtml

Another XML grammar specification language exists in Pollo
http://pollo.sf.net/

Is this a common session problem?
http://www.mail-archive.com/cocoon-users@xml.apache.org/msg16912.html

Apachecon 2000
http://apachecon.com/2000/EU/

An open infrastructure to host and showcase the development of Cocoon-related projects.
http://cocoondev.org/

Xerces external entity handling
http://xml.org/sax/features/external-general-entities