@article{IJAMCS_2014_24_3_a12,
     author = {Ding, D. and Ma, Q. and Ding, X.},
     title = {An unconditionally positive and global stability preserving {NSFD} scheme for an epidemic model with vaccination},
     journal = {International Journal of Applied Mathematics and Computer Science},
     pages = {635--646},
     publisher = {mathdoc},
     volume = {24},
     number = {3},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IJAMCS_2014_24_3_a12/}
}