• [Wiki] http://en.wikipedia.org/wiki/Octopus.
• [Heuk1976] Heukelem, W. F. v. (1976). Growth, bioenergetics and life span of Octopus cyanea and Octopus maya. PhD thesis, Univ Hawaii.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.