Racheboeuf, P.R. & Girard, C. & Lethiers, F. & Derycke, C. & Herrera, Z.A. & Trompette, R. (2001)
Evidence for Givetian stage in the Mauritanian Adrar (West Africa): biostratigraphical data and palaeogeographic implications.
Newsletters on Stratigraphy, 38, 141–162
