https://arxiv.org/abs/1204.4325
Authors. Bassi, Lochan, Satin, Singh & Ulbricht
Venue. Rev. Mod. Phys. 85, 471 — arXiv abstract page
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.