https://doi.org/10.1080/01441640500124779
Authors. Flyvbjerg, B., Skamris Holm, M. K. & Buhl, S. L
Venue. Transport Reviews 26(1), 1–24
How the Institute flags it
established 3 times frontier 2 times
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.