Changes
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* Fix Umlaut Referent to more easily allow multiple authors. Architectural change neccessary to get a lot of this stuff working right.
* "Cited by" service. Scopus via screen scraping? (scopus javascript api? http://www.scopus.com/scsearchapi/ See also http://hublog.hubmed.org/archives/001512.html ) ISI Web of Science is too hard to even screen scrape the interface is such a mess, but Scopus looks do-able. Google scholar?