@article{05823131,
title = {Persistence of an SEIR model with immigration dependent on the prevalence of infection.},
journal = {Discrete Dynamics in Nature and Society},
volume = {2010},
year = {2010},
doi = {10.1155/2010/727168},
zbl = {1201.92057},
language = {en},
url = {http://dml.mathdoc.fr/item/05823131}
}
Wang, Wenjuan; Xin, Jingqi; Zhang, Fengqin. Persistence of an SEIR model with immigration dependent on the prevalence of infection.. Discrete Dynamics in Nature and Society, Tome 2010 (2010) . doi : 10.1155/2010/727168. http://gdmltest.u-ga.fr/item/05823131/