I've already imported a couple of hundred items about articles from PMC into librarybase and hope to add the remaining ones that are cited in en-wiki in the next few days.

@jayvdb offered us a dataset he already has in a private wikibase install that comprises (correct me if I'm wrong) the entire publication output of Australian public universities. Would any one (particularly @Harej) mind importing this as well?

At [[w:en:Template:Cite doi]] there are ~65k subpages of DOIs that are relevant to WP articles' citations. The template itself is deprecated for a number of reasons, but it might be a useful sampling to draw upon if it can be imported somehow.

Related discussion at https://en.wikipedia.org/wiki/Wikipedia:Bot_requests#Orphaned_Category:Cite_doi_templates

At WikiCite @Halfak came up with a strategy for mass-collecting metadata based on the DOIs extracted from Wikipedia articles. I also worked on matching the Librarybase schema with the Wikidata schema through a Librarybase property P22 that associated a Wikidata entity with a Librarybase entity. I asked @Tarrow to mass-create the missing Librarybase properties.

The above refers to https://meta.wikimedia.org/wiki/WikiCite_2016