Roberts, Sean G. Language and Cognition Department, MPI for Psycholinguistics, Max Planck Society;
http://www.pnas.org/content/early/2015/01/14/1417413112/suppl/DCSupplemental (Supplementary material)
PNAS-2015-Everett-1322-7.pdf (Publisher version), 836KB
Everett, C., Blasi, D. E., & Roberts, S. G. (2015). Climate, vocal folds, and tonal languages: Connecting the physiological and geographic dots. Proceedings of the National Academy of Sciences of the United States of America, 112, 1322-1327. doi:10.1073/pnas.1417413112.