Which conventions for references exist?

Basic references

<ref>bla blub</ref>

<ref> wurst bier</ref>

<references/>

is parsed as:

         Paragraph '': 1 children
             Reference u'ref': 1 children
                 u'bla blub'
         Paragraph '': 1 children
             Reference u'ref': 1 children
                 u' wurst bier'
         Paragraph '': 1 children
             ReferenceList u'references': 0 children

Template cite book

http://en.wikipedia.org/wiki/DocBook#References

==References==
{{reflist}}
{{refbegin}}
*{{cite book
 |    author = Norman Walsh, Leonard Muellner
 |      year = 1999
 |     month = October
 |     title = DocBook: The Definitive Guide
 |   edition = 1st edition
 | publisher = O'Reilly Associates
 |        id = ISBN 1-56592-580-7
 |       url = http://www.docbook.org/
 }}
*{{cite book
 |    author = Bob Stayton
 |      year = 2005
 |     title = DocBook XSL: The Complete Guide
 |   edition = 3rd edition
 | publisher = Sagehill Enterprises
 |        id = ISBN 0-9741521-2-9
 |       url = http://www.sagehill.net/docbookxsl/
 }}
*{{cite book
 |    author = Joe Brockmeier
 |      year = 2001
 |     title = DocBook Publishing - A Better Way to Create Professional Documents
 | publisher = Prima Tech's Linux Series
 |        id = ISBN 0-7615-3331-1
 }}
{{refend}}

It would be great if we could have this as structured data in the parse tree!!!

currently this is what is left in the parse tree:

         Paragraph '': 2 children
             Div u'div': 1 children
                 ReferenceList u'references': 0 children
             Div u'div': 1 children
                 ItemList '': 3 children
                     Item '': 1 children
                         Cite '': 3 children
                             u'Norman Walsh, Leonard Muellner (October 1999). '
                             Emphasized '': 1 children
                                 NamedURL u'http://www.docbook.org/': 1 children
                                     u' DocBook: The Definitive Guide'
                             u", 1st edition, O'Reilly Associates. ISBN 1-56592-580-7."
                     Item '': 1 children
                         Cite '': 3 children
                             u'Bob Stayton (2005). '
                             Emphasized '': 1 children
                                 NamedURL u'http://www.sagehill.net/docbookxsl/': 1 children
                                     u' DocBook XSL: The Complete Guide'
                             u', 3rd edition, Sagehill Enterprises. ISBN 0-9741521-2-9.'
                     Item '': 1 children
                         Cite '': 3 children
                             u'Joe Brockmeier (2001). '
                             Emphasized '': 1 children
                                 u'DocBook Publishing - A Better Way to Create Professional Documents'
                             u". Prima Tech's Linux Series. ISBN 0-7615-3331-1."

cite web

http://en.wikipedia.org/wiki/OpenDocument#Software

.<ref>{{cite web
|url=http://www.corel.com/servlet/Satellite/us/en/Product/1207851977074/
|title=Corel WordPerfect Office X4 - Standard Edition - Compatible
|accessdate=2008-05-03}}</ref>

in combination with:

== References ==
{{reflist|2}}

which translates to:

                 Reference u'ref': 4 children
                     NamedURL u'http://www.corel.com/servlet/Satellite/us/en/Product/1207851977074/': 1 children
                         u' Corel WordPerfect Office X4 - Standard Edition - Compatible'
                     u'. Retrieved on '
                     Link '': 1 children
                         u'2008-05-03'
                     u'.'

again, it would be great to have the structured information.