Zerbini, A. N., Friday, N. A., Palacios, D. M., Waite, J. M., Ressler, P. H., Rone, B. K., et al.. (2015).
Baleen whale abundance and distribution in relation to environmental variables and prey density in the Eastern Bering Sea.
Deep Sea Research Part II: Topical Studies in Oceanography. doi:10.1016/j.dsr2.2015.11.002
Zhao, X., Barlow, J., Taylor, B. L., Pitman, R. L., Wang, K., Wei, Z., et al.. (2008).
Abundance and conservation status of the Yangtze finless porpoise in the Yangtze River, China.
Biological Conservation,
141(12), 3006 - 3018. doi:10.1016/j.biocon.2008.09.005