The debated question of asymmetrical rhynchonellids (Brachiopoda, Rhynchonellida): examples from the Late Cretaceous of Western EuropeDanièle Gaspard et Sylvain CharbonnierBSGF - Earth Sci. Bull., 191 (2020) 1DOI: https://doi.org/10.1051/bsgf/2019016