TY - JOUR A1 - Lofgren, E. A1 - Fefferman, N.H. A1 - Naumov, Y.N. A1 - Gorski, J. A1 - Naumova, E.N. T1 - Influenza seasonality: Underlying causes and modeling theories Y1 - 2007 DO - 10.1128/JVI.01680-06 JF - Journal of Virology VL - 81 IS - 11 ER -