- http://www.ibiblio.org/xml/books/bible2/chapters/ch17.html#d1e495 Chapter 17 of the XML Bible, Second Edition : XSL Transformations
- http://xml.apache.org/cocoon/index.html FOP: XSL Formatting Object processor in Java
FOP is the world's first print formatter driven by XSL formatting objects. It is a Java 1.1 application that reads a formatting object tree and then turns it into a PDF document. The formatting object tree, can be in the form of an XML document (output by an XSLT engine like Xalan) or can be passed in memory as a DOM Document or (in the case of Xalan) SAX events.