@article{Yorke1979,
author = {Yorke, J.A. and Nathanson, N. and Pianigiani, G. and Martin, J. },
title= {Seasonality and the requirements for perpetuation and eradication of viruses in populations},
year = {1979},
doi = {10.1093/oxfordjournals.aje.a112666},
journal = {American Journal of Epidemiology},
volume = {109},
number = {2},
pages = {103--123},
}