Figure 4From: Hopf bifurcation analysis for a model of plant virus propagation with two delaysThe trajectories of system (4.1) with \(\tau_{1}=5.79, \tau _{2}=1<\tau^{*}_{20}=4.5647\). The positive equilibrium E is asymptotically stable. The initial value is \((4,29.5,69.5)\)Back to article page