1. Toward a theory of impact crises;Alvarez;Eos,1986
2. Evidence from crater ages for periodic impacts on the Earth
3. More than one event in the late Triassic mass extinction
4. Boucott A. J. (1986) in Global Bio–Events, Ecostratigraphic criteria for evaluating the magnitude, character and duration of bioevents, ed Walliser O. (Springer–Verlag, Berlin), pp 25–45.
5. Connor E. F. (1986) in Patterns and Processes in the History of Life, Time series analysis of the fossil record, eds Raup D. M. Jablonski D. (Springer–Verlag, Berlin), pp 119–48.