@article{02171758, title = {On stability and bifurcation of solutions of an SEIR epidemic model with vertical transmission.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {2004}, year = {2004}, pages = {2971-2987}, doi = {10.1155/S0161171204310380}, zbl = {1077.34044}, language = {en}, url = {http://dml.mathdoc.fr/item/02171758} }
El-Sheikh, M.M.A.; El-Marouf, S.A.A. On stability and bifurcation of solutions of an SEIR epidemic model with vertical transmission.. International Journal of Mathematics and Mathematical Sciences, Tome 2004 (2004) pp. 2971-2987. doi : 10.1155/S0161171204310380. http://gdmltest.u-ga.fr/item/02171758/