Single-Source Documentation: Docbook versus DITA
http://www.livetechdocs.com/blog/db/single-source-documentation-docbook-versus-dita/

Mulvihill, Teresa
LiveTechDocs
2008

Abstract:

When it comes to documentation projects, primarily technical, medical, and scientific, using XML is a no-brainer. The heavy thinking comes when deciding which flavor of XML to use: DocBook or DITA (Darwin Information Typing Architecture). I have been a steadfast supporter of DocBook for over six years. I'd tried my hand at DITA and gave it up as a fad; lots of bells and whistles, but too complicated to integrate. And couldn't DocBook do everything DITA promised anyway?