• [Wiki] http://en.wikipedia.org/wiki/Capra_ibex.
• [AnAge] http://genomics.senescence.info/species/entry.php?species=Capra_ibex.
• [ADW] http://animaldiversity.org/accounts/Capra_ibex/.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.
• [ToigGail1999] Toïgo, C., Gaillard, J.-M., and Michallet, J. (1999). Cohort affects growth of males but not of females in Alpine ibex (Capra ibex ibex). J Mammol, 80:1021--1027.