K. A. Knabe, Y.-Y. Chen, T.-C. Huang, and R. T. Beaubouef, “Relating microfossil distribution patterns to deep-water depositional processes: a new biofacies model based on Oligocene-Miocene deposits”, Anu. Inst. Geociênc., vol. 29, no. 1, pp. 548–548, Jan. 2006.