• [Wiki] http://en.wikipedia.org/wiki/Physeter_macrocephalus.
• [AnAge] http://genomics.senescence.info/species/entry.php?species=Physeter_macrocephalus.
• [ADW] http://animaldiversity.org/accounts/Physeter_macrocephalus/.
• [EvanHind2004] Evans, K. and Hindell, M. A. (2004). The age structure and growth of female sperm whales (Physeter macrocephalus) in southern Australian waters. J. Zool., Lond., 263:237--250.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.
• [Laws1959] Laws, R. M. (1959). The foetal growth rates of whales with special reference to the fin whale, Balaenoptera physalus Linn. Technical report, Nat. Inst of Oceanography.