Delius, Julia A. M. Center for Lifespan Psychology, Max Planck Institute for Human Development, Max Planck Society;
http://dx.doi.org/10.1371/journal.pone.0187541 (Publisher version)
Delius, J. D., Delius, J. A. M., & Lee, J. M. (2017). Symmetry recognition by pigeons: Generalized or not? PLoS ONE, 12(11): e0187541. doi:10.1371/journal.pone.0187541.