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González, Javier; Siow, Melanie; Garcia-del-Rey, Eduardo; Delgado, Guillermo; kaj Wink, Michael, Phylogenetic relationships of the Cape Verde Sparrow based on mitochondrial and nuclear DNA, konsultita la 7-an de Februaro 2010, Systematics 2008, Göttingen, 2008 [1]Arkivigite je 2011-07-07 per la retarkivo Wayback Machine