@article{10_1023_A:1026002429257,
     author = {Khan, Q. J. A. and Krishnan, E. V.},
     title = {An epidemic model with a time delay in transmission},
     journal = {Applications of Mathematics},
     pages = {193--203},
     year = {2003},
     volume = {48},
     number = {3},
     doi = {10.1023/A:1026002429257},
     mrnumber = {1980367},
     zbl = {1099.92062},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1023/A:1026002429257/}
}