Xu Yulin; Liu Jianli (1993): Neogene calcareous nannofossils from the West Pacific Ocean and their significance for paleo-oceanography. Ministry of Geology and Mineral Resources, Marine Geology Institute and Quaternary Geology Research Center, Qingdao, China, Haiyang Dizhi yu Disiji Dizhi = Marine Geology & Quaternary Geology, 13 (2), 12-24, georefid:1995-046466