@article{01488488, title = {Vaccination in a model of an epidemic.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {23}, year = {2000}, pages = {425-429}, doi = {10.1155/S0161171200002696}, zbl = {1065.92501}, language = {en}, url = {http://dml.mathdoc.fr/item/01488488} }
Abual-Rub, M. S. Vaccination in a model of an epidemic.. International Journal of Mathematics and Mathematical Sciences, Tome 23 (2000) pp. 425-429. doi : 10.1155/S0161171200002696. http://gdmltest.u-ga.fr/item/01488488/