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Sacks, B. N.; Moore, M.; Statham, M. J.; Wittmer, H. U. (2011). „A restricted hybrid zone between native and introduced red fox Vulpes vulpes populations suggests reproductive barriers and competitive exclusion“. Molecular Ecology. 20-jild, № 2. 326–341-bet. doi:10.1111/j.1365-294x.2010.04943.x. PMID21143330.
Teacher, Amber G. F.; Thomas, Jessica A.; Barnes, Ian (2011). „Modern and ancient red fox (Vulpes vulpes) in Europe show an unusual lack of geographical and temporal structuring, and differing responses within the carnivores to historical climatic change“. BMC Evolutionary Biology. 11-jild, № 214. 214-bet. doi:10.1186/1471-2148-11-214. PMC3154186. PMID21774815.
Kutschera, Verena E.; Lecomte, Nicolas; Janke, Axel; Selva, Nuria; Sokolov, Alexander A.; Haun, Timm; Steyer, Katharina; Nowak, Carsten; Hailer, Frank (2013). „A range-wide synthesis and timeline for phylogeographic events in the red fox (Vulpes vulpes)“. BMC Evolutionary Biology. 13-jild, № 114. 114-bet. doi:10.1186/1471-2148-13-114. PMC3689046. PMID23738594.
ncbi.nlm.nih.gov
Teacher, Amber G. F.; Thomas, Jessica A.; Barnes, Ian (2011). „Modern and ancient red fox (Vulpes vulpes) in Europe show an unusual lack of geographical and temporal structuring, and differing responses within the carnivores to historical climatic change“. BMC Evolutionary Biology. 11-jild, № 214. 214-bet. doi:10.1186/1471-2148-11-214. PMC3154186. PMID21774815.
Kutschera, Verena E.; Lecomte, Nicolas; Janke, Axel; Selva, Nuria; Sokolov, Alexander A.; Haun, Timm; Steyer, Katharina; Nowak, Carsten; Hailer, Frank (2013). „A range-wide synthesis and timeline for phylogeographic events in the red fox (Vulpes vulpes)“. BMC Evolutionary Biology. 13-jild, № 114. 114-bet. doi:10.1186/1471-2148-13-114. PMC3689046. PMID23738594.
Spagnesi & De Marina Marinis 2002, s. 222 harvnb error: no target: CITEREFSpagnesiDe_Marina_Marinis2002 (help) Spagnesi, Mario & De Marina Marinis, Maria (2002). „Mammiferi d'Italia“. Quaderni di Conservazione della Natura. ISSN1592-2901.