Darling, Kate F.; Kroon, D.; Wade, C. M.; Leigh Brown, A. J. (1996): The isolation and amplification of the 18s ribosomal RNA gene from planktonic foraminifers using gametogenic specimens. University of Wales, Aberystwyth-Press, Aberystwyth, United Kingdom, In: Moguilevsky, Alicia (editor), Whatley, Robin (editor), Microfossils and oceanic environments, 249-259, georefid:1997-074812