bagia - 2015-04-08

Hi guys, I am on my final project and I am trying to create bifurcation diagram using matcont. I tried over
and over again but I cannot create bifurcation diagram as shown in the paper I cite. The upper diagram is the diagram that I found. The lower one is the diagram inserted in the paper The Dynamics of Optimally Controlled Tumor Model : A Case Study
I use the equation

NN'=R2*NN*(1-B2*NN)-C4*TT*NN
TT'=R1*TT*(1-B1*TT)-C2*II*TT-C3*TT*NN
II'=SS+(RHO*II*TT)/(ALPHA+TT)-C1*II*TT-D1*II

NN,TT,II
R2=1,B2=1,C4=1,R1=1.5,B1=1,C3=1,C2=0.5,SS=0.33,RHO=0.01,ALPHA=0.3,C1=1,D1=0.2

I cannot find my mistakes. Could anyone help me please?
Thanks.