Marine Mammal Institute

Pitman, R. L., Fearnbach, H., LeDuc, R., Gilpatrick, J. W., Ford, J. K. B., & Ballance, L. T.. (2007). Killer whales preying on a blue whale calf on the Costa Rica Dome: genetics, morphometrics, vocalizations and composition of the group. Journal of Cetacean Research and Management , 9(2), 151-158.

Durban, J., Ellifrit, D., Dahlheim, M., Waite, J., Matkin, C., Barrett-Lennard, L., et al.. (2010). Photographic mark-recapture analysis of clustered mammal-eating killer whales around the Aleutian Islands and Gulf of Alaska. Marine Biology, 157(7), 1591 - 1604. doi:10.1007/s00227-010-1432-6