Suc, Jean Pierre; Bertini, Adele; Leroy, Suzanne A. G.; Suballyova, Danica (1997): Towards the lowering of the Pliocene/Pleistocene boundary to the Gauss-Matuyama reversal. Pergamon, Oxford, United Kingdom, In: Partridge, T. C. (editor), The Plio-Pleistocene boundary, 40, 37-42, georefid:2001-064178