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Perez, J.M., Granados, J.E., Soriguer, R.C., Fandos, P., Marquez, F.J., and Crampe, J.P. (2002). Distribution, status and conservation problems of the Spanish ibex, Capra pyrenaica (Mammalia: Artiodactyla). Mammal Rev. 32(1):26-39. Online-pdf (Memento vom 12. Juni 2012 im Internet Archive) doi:10.1046/j.1365-2907.2002.00097.x
Perez, J.M., Granados, J.E., Soriguer, R.C., Fandos, P., Marquez, F.J., and Crampe, J.P. (2002). Distribution, status and conservation problems of the Spanish ibex, Capra pyrenaica (Mammalia: Artiodactyla). Mammal Rev. 32(1):26-39. Online-pdf (Memento vom 12. Juni 2012 im Internet Archive) doi:10.1046/j.1365-2907.2002.00097.x