1.Francis, T Jr. Influenza: the newe acquayantance. Ann Intern Med 1953; 39: 203–21.
2.Thomson, D, Thomson, R. Annals of the Pickett–Thomson research laboratory. Baltimore, Maryland: Williams and Wilkins. 1933: 1–42.
3.Doll, R. Major epidemics of the 20th century: from coronary thrombosis to AIDS. J R Statist Soc 1987: 150: 373–95.
4.Crosby, AW. America's forgotten pandemic. Cambridge: Cambridge University Press. 1989.
5.Webster, RG, Laver, G. The origin of pandemic influenza. Bull WHO 1972: 47: 449–52.
6.Scholtissek, C. Rohde, W, von Hoyningen, V, Rott, R. On the origin of the human influenza virus subtypes H2N2 and H3N2. Virology 1978; 87: 13–20.
7.Webster, RG. Bean, WJ. Gorman, OT. Chambers, TM. Kawaoka, Y. Evolution and ecology of influenza A viruses. Microbiol Rev 1992; 56: 152–79.
8.Hinshaw, VS. Webster, RG. The natural history of influenza A viruses. In: Beare, AS. ed. Basic and applied influenza research. Baca Raton. Florida: CRC Press. 1982: 79–104.
9.Webster, RG. Yakhno, M. Hinshaw, VS. Bean, WJ, Murti, KG. Intestinal influenza: replication and characterization of influenza viruses in ducks. Virology 1978; 84: 268–78.
10.Hinshaw, VS. Webster, RG, Turner, B. Water-borne transmission of influenza A viruses? Intervirology 1979; 11: 66–8.
11.Addy, CE. Guide to waterfowl banding. Laurel, Maryland: U.S. Fish and Wildlife Service. 1956.
12.Weaver, H. Turner, B. Allen, J. Pryor, P. Recovery distribution from summer duck banding in Alberta. Edmonton, Alberta: Alberta Waterfowl Technical Committee. 1977.
13.Hinshaw, VS, Webster, RG, Turner, B. Novel influenza A viruses isolates from Canadian feral ducks. including strains antigenically related to swine influenza (Hsw 1N1) viruses. J Gen Virol 1978: 41: 115–27.
14.Palmer, DF, Coleman, MT. Dowdle, WR. Schild, GC. Advanced laboratory techniques for influenza diagnosis. United States Department of Health. Education and Welfare. 1975.
15.Aymard-Henry, M. Coleman, WR. Dowdle, WR. Laver, GC. Schild, GC. Webster, RG. Influenza neuraminidase and neuraminidase-inhibition test procedures. Bull WHO 1973; 48: 199–202.
16.Cooch, FG. Wendt, S. Smith, GEJ. Butler, G. The Canada migratory game bird hunting permit and associated surveys. In: Boyd, H. Finney, GH. eds. Migratory game bird hunters and hunting in Canada. Ottawa: Canadian Wildlife Service Report Series. 1978: 8–39.
17.Kawaoka, Y. Chambers, TM. Sladen, WL. Webster, RG. Is the gene pool of influenza viruses in shorebirds and gulls different from that in wild ducks? Virology 1988: 163: 247–50.
18.Kida, H. Yanagawa, R. Matsuoka, Y. Duck influenza lacking evidence of disease signs and immune response. Infect Immun 1980; 30: 547–53.
19.Shortridge, KF. King, AP. Cocultivation of avian orthmyxoviruses and paramyxoviruses in embryonated eggs: implications for surveillance studies. Appl Environ Microbiol 1983: 45: 463–7.
20.Hinshaw, VS. Wood, JM. Webster, RG. Deibel, R. Turner, B. Circulation of influenza viruses and paramyxoviruses in waterfowl originating from two different areas of North America. Bull WHO 1985; 63: 711–9.
21.Stallknecht, DE. Shane, SM. Zwank, PJ. Senne, DA. Kearney, MT. Avian influenza viruses from migratory and resident ducks of coastal Louisiana. Avaian Dis 1990; 34: 398–405.