Hilleman MR (19 August 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 MR (19 August 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.