Bert, Didier, and Jean-Simon Pagès. “Overview of the Les Isnards Ammonite Slab Geoheritage Site (Digne-Les-Bains, Southeastern France)”. Geoconservation Research 4, no. 2 (November 8, 2021). Accessed April 22, 2026. https://oiccpress.com/gcr/article/view/2777.