Greco, B. J., Meehan, C. L., Hogan, J. N., Leighty, K. A., Mellen, J., Mason, G. J., & Mench, J. A. (2016). The Days and Nights of Zoo Elephants: Using Epidemiology to Better Understand Stereotypic Behavior of African Elephants (Loxodonta africana) and Asian Elephants (Elephas maximus) in North American Zoos. PLoS One.

Greco, Brian J., Cheryl L. Meehan, Jen N. Hogan, Katherine A. Leighty, Jill Mellen, Georgia J. Mason, e Joy A. Mench. "The Days and Nights of Zoo Elephants: Using Epidemiology to Better Understand Stereotypic Behavior of African Elephants (Loxodonta Africana) and Asian Elephants (Elephas Maximus) in North American Zoos." PLoS One 2016.

Greco, Brian J., et al. "The Days and Nights of Zoo Elephants: Using Epidemiology to Better Understand Stereotypic Behavior of African Elephants (Loxodonta Africana) and Asian Elephants (Elephas Maximus) in North American Zoos." PLoS One 2016.