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KERBIS PETERHANS, J. Paraxerus vincenti [online]. IUCN, 2008 [cit. 2012-09-14]. (IUCN Red List of Threatened Species. Version 2012.1). Dostupné online. (anglicky)
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GRAMMONT, de, P. C.; CUARÓN, A. Tamiasciurus mearnsi [online]. IUCN, 2008 [cit. 2012-09-14]. (IUCN Red List of Threatened Species. Version 2012.1). Dostupné online. (anglicky)
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NAGORSEN, D. W. et al. Marmota vancouverensis [online]. IUCN, 2008 [cit. 2012-09-14]. (IUCN Red List of Threatened Species. Version 2012.1). Dostupné online. (anglicky)
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