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| Author | Title | Year | Publication | Serial  |
Volume | Pages |
|---|---|---|---|---|---|---|
| Tumova, B. | Equine influenza--a segment in influenza virus ecology | 1980 | Comparative Immunology, Microbiology and Infectious Diseases | 2691 | 3 | 45-59 |
| Dowdle, W.R.; Schild, G.C. | Influenza: its antigenic variation and ecology | 1976 | Bulletin of the Pan American Health Organization | 2700 | 10 | 193-195 |