4Johnson NP,Mueller J.Updating the accounts: global mortality of the 1918-1920 "Spanish" influenza pandemic[].Bulletin of the History of Medicine.2002
5Oxford,J.S."The So-Called Great Spanish Influenza Pandemic of 1918 May Have Originated in France in 1916 , "[].Philosophical Transactions: Biological Sciences.2001
6John M. Barry."The site of origin of the 1918 influenza pandemic and its public health implications,"[].Journal of Translational Medicine.2004
7Iezzoni,Lynette.Influenza 1918: The Worse Epidemic in American History[]..1999
8Walter Gable."The Influenza Epidemic of 1918"[]..
9Charles Graves.Invasion by Virus:Can It Happen Againl[]..1969
10.Think Influenza Came in U-Boat[].The New York Times.1918