Okada, Hisatake; Matsuoka, Mariko (1996): Lower-photic nannoflora as an indicator of the late Quaternary monsoonal palaeo-record in the tropical Indian Ocean. University of Wales, Aberystwyth-Press, Aberystwyth, United Kingdom, In: Moguilevsky, Alicia (editor), Whatley, Robin (editor), Microfossils and oceanic environments, 231-245, georefid:1997-074811