Allende, Luis M.; Rubio, Isabel; Ruíz-del-Valle, Valentin; Guillén, Jesus; Martínez-Laso, Jorge; Lowy, Ernesto; Varela, Pilar; Zamora, Jorge; Arnaiz-Villena, Antonio (2001). "The Old World sparrows (genus Passer) phylogeography and their relative abundance of nuclear mtDNA pseudogenes" (PDF). Journal of Molecular Evolution 53 (2): 144–154. ببمد: 11479685. 21 Temmuz 2011 tarihinde özgün kaynağından arşivlendi.
^ Skoracki, Maciej (2002). "Three new species of the ectoparasitic mites of the genus Syringophiloidus Kethley, 1970 (Acari: Syringophilidae) from passeriform birds from Slovakia" (PDF). Folia Parasitologica 49 (4): 305–313. ببمد: 12641205.
, Z.; Lei, F. M.; Yu, J.; Fan, Z. J.; Yin, Z. H.; Jia, C. X.; Xiong, K. J.; Sun, Y. H.; Zhang, X. W.; Wu, X. M.; Gao, X. B.; Li, T. X. (2005). "New genotype of Avian Influenza H5N1 Viruses isolated from Tree Sparrows in China" (PDF). Journal of Virology 79 (24): 15460–15466. doi:10.1128/JVI.79.24.15460-15466.2005. PMC =pmcentrez 1316012. ببمد: 16306617
