1. A. L. Melott, B. S. Lieberman, C. M. Laird, et al., Intern. J. Astrobiol., No. 3, 55–61 (2004).
2. R. E. Ernst and K. L. Buchan, Geol. Soc. Amer. Spec. Pap. 352, 1–92 (2001).
3. S. I. Kaiser, T. Steuber, R. T. Becker, and M. M. Joachimski, Palaeogeog. Palaeoclim. Palaeoecol. 240, 146–160 (2006).
4. R. A. Kerr, Science Now., 17 Nov. (2011). http"//news.sciencemag.org/sciencenow/2011/biggest-of-mass-extinctions-look.html?ref=hp
5. M. S. Barash, Dokl. Akad. Nauk 438, 777–781 (2011) [Doklady Earth Sciences 438, 750–753 (2011)].