Bartlett, R., Elrick, M., Wheeley, J. R., Polyak, V., Desrochers, A., & Asmerom, Y. (2018). Abrupt global-ocean anoxia during the Late Ordovician–early Silurian detected using uranium isotopes of marine carbonates. Proc Natl Acad Sci U S A.

Bartlett, Rick, Maya Elrick, James R. Wheeley, Victor Polyak, André Desrochers, och Yemane Asmerom. "Abrupt Global-ocean Anoxia During the Late Ordovician–early Silurian Detected Using Uranium Isotopes of Marine Carbonates." Proc Natl Acad Sci U S A 2018.

Bartlett, Rick, et al. "Abrupt Global-ocean Anoxia During the Late Ordovician–early Silurian Detected Using Uranium Isotopes of Marine Carbonates." Proc Natl Acad Sci U S A 2018.