I have been thinking about a package like this as a research tool for .LRN users. It is on my 2004 list, look forward to the demo. 😊
Would like to see community reference sharing and automatic import from reference databases: Medline, Ovid, etc.
You might want to look at Peter's "Bookmarks" package... hacking on bookmarks might be a cheap way to get a demo up very quickly if you are interested in selling someone on the idea of using OpenACS.
Here are some interesting links I have run across thinking about the problem:
Medlinefetch: Allows you to retrieve one entry at a time from the MEDLINE literature reference database: http://www.ebi.ac.uk/cgi-bin/medlinefetch
OpenBQS: a query and retrieval interface to the bibliographic repositories using SOAP protocol.
http://industry.ebi.ac.uk/openBQS/
Also it is worth looking at the tools that are out there:
Reference Manager, Endnote, etc.
Good luck.