Hi Andrea,
Alec can probably answer this question more clearly, but I think he's currently flying back from Norway.

I'll send him a link to this thread though.
There's a SWORD 1.2 plugin, available in our plugin gallery
here. But Alec has been doing a lot of work on SWORD support for the upcoming 2.3.2 release (see
http://pkp.sfu.ca/bugzilla/show_bug.cgi?id=5036, and the files
here; there may be more that I'm missing). Take a look, and let us know if you have any questions. Alec should be able to fill in any blanks I'm missing shortly.
Cheers,
James