https://www.mdpi.com/2077-1312/13/2/298
Authors. Bakker, A.M.R., Rovers, D.L.T. & Mooyaart, L.F
Venue. Journal of Marine Science and Engineering
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.