Hopkins, W. D., Procyk, E., Petrides, M., Schapiro, S. J., Mareno, M. C., & Amiez, C. (2021). Sulcal Morphology in Cingulate Cortex is Associated with Voluntary Oro-Facial Motor Control and Gestural Communication in Chimpanzees (Pan troglodytes). Cereb Cortex.

Hopkins, William D., Emmanuel Procyk, Michael Petrides, Steven J. Schapiro, Mary Catherine Mareno, a Celine Amiez. "Sulcal Morphology in Cingulate Cortex Is Associated With Voluntary Oro-Facial Motor Control and Gestural Communication in Chimpanzees (Pan Troglodytes)." Cereb Cortex 2021.

Hopkins, William D., et al. "Sulcal Morphology in Cingulate Cortex Is Associated With Voluntary Oro-Facial Motor Control and Gestural Communication in Chimpanzees (Pan Troglodytes)." Cereb Cortex 2021.