This is a slight change to the standard Zotero BibTeX exporter in order to work better with natbib, and fix the letter "ø"... I am using it with these patched versions of [[http://github.com/unhammer/writer2latex][Writer2LaTeX]] and [[http://github.com/unhammer/lyz][LyZ]].

To use it:

• Download BibTeX-natbib.js and put it in your zotero/translators directory. On my system this is =~/.mozilla/firefox/bi3xapi2.default/zotero/translators= (you can also choose to store your Zotero folder somewhere else, in the Zotero "advanced" settings)
• Restart Firefox. When you got to export, you’ll see it offered as a possibility. (Also, if you use the above LyZ-version, you can select =BibTeX (natbib)= from LyZ->Settings.)