@article{IJAMCS_2017_27_3_a13,
     author = {Wijaya, K. P. and Sutimin, S. and Soewono, E. and G\"otz, T.},
     title = {On the existence of a nontrivial equilibrium in relation to the basic reproductive number},
     journal = {International Journal of Applied Mathematics and Computer Science},
     pages = {623--636},
     publisher = {mathdoc},
     volume = {27},
     number = {3},
     year = {2017},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IJAMCS_2017_27_3_a13/}
}