Figure 4: 𝑏 1 = 1 ; 𝛽 1 = 0.02 ; 𝛽 2 = 0.4 ; 𝛽 3 = 0.6 ; 𝛾 ℎ = 0.3 ; 𝜇 V = 0.2 ; > 𝛿 = 0.01 ; 𝑅 = 0.93 𝛽 1 ℎ 0