Pospichal, James J.; Wise, Sherwood W., Jr.; Asaro, Frank; Hamilton, Norman (1990): The effects of bioturbation across a biostratigraphically complete high southern latitude Cretaceous/Tertiary boundary. Geological Society of America (GSA), Boulder, CO, United States, In: Sharpton, Virgil L. (editor), Ward, Peter D. (editor), Global catastrophes in Earth history; an interdisciplinary conference on impacts, volcanism, and mass mortality, 247, 497-507, georefid:1995-026173