@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/