Title: How to kill (almost) all life: the end-Permian extinction event.

Authors: Benton, M. J., and R. J. Twitchett.

Citation: Benton, M. J., and R. J. Twitchett. 2003. How to kill (almost) all life: the end-Permian extinction event. Trends in Ecology and Evolution 18, no. 7: 358-65.