Cited by name. No followable URL — the bibliographic record is the citation.
Authors. Næss, P., Flyvbjerg, B. & Buhl, S
Venue. Transport Reviews 26(5), 537–555
How the Institute flags it
frontier 2 times 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.