Influenza virus gene pool in a poultry market in South Central China
Ming Liu, Shiqin He, David Walker, NanNan Zhou, Daniel R. Perez, Bing Mo, Fan Li, Xiaotian Huang, Robert G. Webster, and Richard J. Webby
NCBI/PubMed 2003

Influenza A viruses of wild aquatic birds in the Americas
Scott Krauss, David Walker, S. Paul Pryor, Larry Niles, Li Chenghong, Virginia S. Hinshaw, and Robert G. Webster
2004

The matrix gene of Influenza A isolated from wild aquatic birds
Linda Widjaja
Journal of Virology 2004

Feral Duck/ Infuenza A viruses in feral Canadian ducks: Extensive reassortment in nature
Todd F Hatchette, David Walker, Christie Johnson, Ashley Baker, S. Paul Pryor and Robert G Webster. 2004
2004

Detection of amantadine-resistant variants among avian influenza viruses isolated in North America and Asia
Natalia A. Ilyushina, Elena A. Govorkova, and Robert G. Webster