Cantor, M., Cachuba, T., Fernandes, L., & Engel, M. H. (2010). Behavioural reactions
of wintering humpback whales (Megaptera novaeangliae) to biopsy sampling in the western South Atlantic.
Journal of the Marine Biological Association of the United Kingdom, 90(8), 1701-1711.
doi:10.1017/s0025315409991561.