https://doi.org/10.1088/2634-4505/acd4e7
Authors. Shah, Z.; Carvallo, J. P.; Hsu, F.-C.; Taneja, J
Venue. Environmental Research: Infrastructure and Sustainability
How the Institute flags it
established 5 times 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.