@inbook{278,
  author = {G. Keller},
  title = {Planktonic foraminiferal biostratigraphy and paleoceanography of the Japan Trench},
  year = {1980},
  journal = {Initial Reports, Deep Sea Drilling Project},
  volume = {57},
  pages = {p. 809-834},
  publisher = {U.S. Government Printing Office},
  language = {eng},
}