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de Graaf M, Osterhaus AD, Fouchier RA, Holmes EC. Evolutionary dynamics of human and avian metapneumoviruses. The Journal of General Virology. 2008, 89 (Pt 12): 2933–2942. PMID 19008378. doi:10.1099/vir.0.2008/006957-0.
Smith GJ, Vijaykrishna D, Bahl J, Lycett SJ, Worobey M, Pybus OG, et al. Origins and evolutionary genomics of the 2009 swine-origin H1N1 influenza A epidemic. Nature. 2009, 459 (7250): 1122–5. Bibcode:2009Natur.459.1122S. PMID 19516283. doi:10.1038/nature08182.
Smith GJ, Vijaykrishna D, Bahl J, Lycett SJ, Worobey M, Pybus OG, et al. Origins and evolutionary genomics of the 2009 swine-origin H1N1 influenza A epidemic. Nature. 2009, 459 (7250): 1122–5. Bibcode:2009Natur.459.1122S. PMID 19516283. doi:10.1038/nature08182.
de Graaf M, Osterhaus AD, Fouchier RA, Holmes EC. Evolutionary dynamics of human and avian metapneumoviruses. The Journal of General Virology. 2008, 89 (Pt 12): 2933–2942. PMID 19008378. doi:10.1099/vir.0.2008/006957-0.
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Eidson M. Zoonotic disease. Britannica. [16 April 2020]. (原始内容存档于2021-11-22).