https://pmc.ncbi.nlm.nih.gov/articles/PMC12776574/
Authors. Koštál, Barták, Včeláková et al
Venue. ACS Materials Letters 8, 116
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.