Peckre L, Kappeler PM, Fichtel C. Clarifying and expanding the social complexity hypothesis for communicative complexity. Behavioral Ecology and Sociobiology. 2019;73(1). Available at: http://link.springer.com/10.1007/s00265-018-2605-4.

Sperber ALucia, Werner LM, Kappeler PM, Fichtel C. Grunt to go-Vocal coordination of group movements in redfronted lemurs Wright J, ed. Ethology. 2017;123(12):894 - 905. Available at: http://doi.wiley.com/10.1111/eth.2017.123.issue-12.