https://scglass.uchicago.edu/publications/
Authors. Simons Collaboration on Cracking the Glass Problem
Venue. — collaboration’s own listing (programme’s own figures)
How the Institute flags it
frontier 2 times established 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.