https://api.openalex.org/works/doi:10.1016/j.lssr.2023.08.005
Authors. Frossard, E., Crain, G., Giménez de Azcárate Bordóns, I. and colleagues
Venue. Life Sciences in Space Research
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.