Cotton, J. M., Cerling, T. E., Hoppe, K. A., Mosier, T. M., & Still, C. J. (2016). Climate, CO(2), and the history of North American grasses since the Last Glacial Maximum. Sci Adv.

Cotton, Jennifer M., Thure E. Cerling, Kathryn A. Hoppe, Thomas M. Mosier, und Christopher J. Still. "Climate, CO(2), and the History of North American Grasses Since the Last Glacial Maximum." Sci Adv 2016.

Cotton, Jennifer M., et al. "Climate, CO(2), and the History of North American Grasses Since the Last Glacial Maximum." Sci Adv 2016.