Figure 2
![Figure 2](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs13662-018-1473-6/MediaObjects/13662_2018_1473_Fig2_HTML.gif)
The boundary equilibrium \(\pmb{E_{0}}\) is asymptotically stable with the parameters \(\pmb{a_{1}=1}\) , \(\pmb{a_{2}=1}\) , \(\pmb{b_{1}=0.9}\) , \(\pmb{b_{2}=1}\) , \(\pmb{c_{1}=0.9}\) , \(\pmb{d_{1}=1}\) , \(\pmb{d_{2}=1}\) and \(\pmb{d_{3}=1}\) .