El Niño, catastrophism, and culture change in ancient AmericaBrian Billman, David Hodell, Gary Huckleberry, David Keefer, Kirk A. Maasch, Paul Mayewski, Michael Moseley, James B., III Richardson, Paul Roscoe, Payson D. Sheets, S. Jeffrey K. Wilkerson, Jason Yaeger · First published 2008Open the Tome
Climate change and cultural dynamicsAnderson, David G., Kirk A. Maasch, Daniel H. Sandweiss · First published 2007Open the Tome
