https://doi.org/10.3390/futuretransp5040155
Authors. Tsagkaris, C. & Moschovou, T
Venue. Future Transportation
How the Institute flags it
established 1 time frontier 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.