Versteegh, Gerard J. M.; Brinkhuis, Henk; Visscher, Henk; Zonneveld, Karin A. F. (1996): The relation between productivity and temperature in the Pliocene North Atlantic at the onset of northern hemisphere glaciation; a palynological study. Elsevier, Amsterdam, Netherlands, Global and Planetary Change, 11 (4), 155-165, georefid:1996-059375