https://www.nber.org/system/files/working_papers/w25545/revisions/w25545.rev4.pdf
Authors. Gross, D. P
Venue. NBER Working Paper 25545 rev. 4 PDF (published in Management Science)
How the Institute flags it
frontier 3 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.