i'm moderately hopeful that we'll get that sort of querying for free* as the semantic web matures, and we can better query federated linked data. university libraries are pretty keen on making that dream a reality (and this is the sort of use-case that makes them want to be able to do that, though they'd probably pitch the rosier version, where they show the indirect impact of a well-regarded paper or study, because that sells better than the doom-n-gloom version described here, even if that version is just as important).

* or if not "free", a very small marginal cost, in terms of say data aggregation and programming effort