Many authors

Bibulus looks quite promising, and I am thinking of adapting the same
syntax for my XML bibliography file (even if there are already
several other syntaxes out there). 

>From the sample file and the DTD I could not see how you want to deal
with several authors. Many author blocks? Or something like this:

<authors>
  <author>xxxxx</author>
  <author>xxxxx</author>
  <author>xxxxx</author>
</authors>

Best, Martin