Luo, B., Jiang, T., Liu, Y., Wang, J., Lin, A., Wei, X., et al. (2013). Brevity is
prevalent in bat short-range communication. Journal of Comparative Physiology A-Neuroethology Sensory
Neural and Behavioral Physiology, 199(4), 325-333. doi:10.1007/s00359-013-0793-y.