Wilson, Robert J.; Gutiérrez, David; Gutiérrez, Javier; Martínez, David; Agudo, Rosa; Monserrat, Víctor J. (2005-11-01). "Changes to the elevational limits and extent of species ranges associated with climate change". Ecology Letters. 8 (11): 1138–1146. Bibcode:2005EcolL...8.1138W. doi:10.1111/j.1461-0248.2005.00824.x. ISSN1461-0248. PMID21352437.
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Wilson, Robert J.; Gutiérrez, David; Gutiérrez, Javier; Martínez, David; Agudo, Rosa; Monserrat, Víctor J. (2005-11-01). "Changes to the elevational limits and extent of species ranges associated with climate change". Ecology Letters. 8 (11): 1138–1146. Bibcode:2005EcolL...8.1138W. doi:10.1111/j.1461-0248.2005.00824.x. ISSN1461-0248. PMID21352437.
Graybeal, Anna; Cannatella, David C. (1995). "A new taxon of Bufonidae from Peru, with descriptions of two new species and a review of the phylogenetic status of supraspecific bufonid taxa". Herpetologica. 51 (2): 105–131. JSTOR3892580.
Wilson, Robert J.; Gutiérrez, David; Gutiérrez, Javier; Martínez, David; Agudo, Rosa; Monserrat, Víctor J. (2005-11-01). "Changes to the elevational limits and extent of species ranges associated with climate change". Ecology Letters. 8 (11): 1138–1146. Bibcode:2005EcolL...8.1138W. doi:10.1111/j.1461-0248.2005.00824.x. ISSN1461-0248. PMID21352437.
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Wilson, Robert J.; Gutiérrez, David; Gutiérrez, Javier; Martínez, David; Agudo, Rosa; Monserrat, Víctor J. (2005-11-01). "Changes to the elevational limits and extent of species ranges associated with climate change". Ecology Letters. 8 (11): 1138–1146. Bibcode:2005EcolL...8.1138W. doi:10.1111/j.1461-0248.2005.00824.x. ISSN1461-0248. PMID21352437.