Cited by name. No followable URL — the bibliographic record is the citation.
Authors. Baars, B. J
Venue. Cambridge University Press
How the Institute flags it
frontier 1 time established 1 time
This source carries more than one flag across the corpus. That is not an inconsistency to resolve: the same work can be established evidence for one claim and frontier evidence for another, and the flag belongs to the use rather than to the source.