Hilleman, M (2002). »Realities and enigmas of human viral influenza: pathogenesis, epidemiology and control«. Vaccine. 20 (25–26): 3068–3087. doi:10.1016/S0264-410X(02)00254-2. PMID12163258.
Hilleman, M (2002). »Realities and enigmas of human viral influenza: pathogenesis, epidemiology and control«. Vaccine. 20 (25–26): 3068–3087. doi:10.1016/S0264-410X(02)00254-2. PMID12163258.