Two-dimensional stability analysis in a HIV model with quadratic   logistic growth term
  We consider a Human Immunodeficiency Virus (HIV) model with a logistic growth term and continue the analysis of the previous article [6]. We now take the viral diffusion in a two-dimensional environment. The model consists of two ODEs for the concentrations of the target T cells, the infected cells, and a parabolic PDE for the virus particles. We study the stability of the uninfected and infected equilibria, the occurrence of Hopf bifurcation and the stability of the periodic solutions. 
Claude-Michel Brauner, Xinyue Fan, Luca Lorenzi
math.AP