Heusser, Linda E. (1992): Stratigraphic and paleoenvironmental implications of Neogene palynology of ODP Sites 794, and 797 in the Sea of Japan. University of Tokyo Press, Tokyo, Japan, In: Tsuchi, Ryuichi (editor), Ingle, James C., Jr. (editor), Pacific Neogene; environment, evolution, and events, 3-13, georefid:1994-032528