@article{00930061,
title = {An epidemic model with density dependent parameters and vaccination.},
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {19},
year = {1996},
pages = {805-814},
doi = {10.1155/S0161171296001123},
zbl = {0854.92019},
language = {en},
url = {http://dml.mathdoc.fr/item/00930061}
}
Khan, Q.J.A.; Bhatt, B.S. An epidemic model with density dependent parameters and vaccination.. International Journal of Mathematics and Mathematical Sciences, Tome 19 (1996) pp. 805-814. doi : 10.1155/S0161171296001123. http://gdmltest.u-ga.fr/item/00930061/