@article{05690839,
title = {Existence of a nonautonomous SIR epidemic model with age structure.},
journal = {Advances in Difference Equations [electronic only]},
volume = {2010},
year = {2010},
doi = {10.1155/2010/212858},
zbl = {1187.35264},
language = {en},
url = {http://dml.mathdoc.fr/item/05690839}
}
Yang, Junyuan; Wang, Xiaoyan. Existence of a nonautonomous SIR epidemic model with age structure.. Advances in Difference Equations [electronic only], Tome 2010 (2010) . doi : 10.1155/2010/212858. http://gdmltest.u-ga.fr/item/05690839/