We allow vCards to be used for authors, in place of foaf:Person. Normally, these are not linked, but you can end up browsing to / displaying a vCard in VIVO (I've been looking at extending the co-author network to allow vCards to be optionally displayed alongside people, which then has a click through).
The vCard is a subtype of Information Content Entity - which is also a super type for Articles, etc., and happens to be the type used as a domain for the faux property "authors".
So vCards claim to author themselves! Ideally, the domain of "authors" should be changed to not include vCards, and vCards should have a faux property for "author of".