%0 Journal Article %A Wijaya, K. P. %A Sutimin, S. %A Soewono, E. %A Götz, T. %T On the existence of a nontrivial equilibrium in relation to the basic reproductive number %J International Journal of Applied Mathematics and Computer Science %D 2017 %P 623-636 %V 27 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IJAMCS_2017_27_3_a13/ %G en %F IJAMCS_2017_27_3_a13