Morete, M. E., Pace, III, R. M., Martins, C. C. A., Freitas, A. C., & Engel, M. H. (2003). Indexing seasonal abundance of humpback whales around Abrolhos Archipelago, Bahia, Brazil. Latin American Journal of Aquatic Mammals, 2(1), 21-28. https://doi.org/10.5597/lajam00027