Mostafa Adimy, Fabien Crauste, My Lhassan Hbid, Redouane Qesmi, “Stability and Hopf bifurcation for a cell population model with state-dependent delay”, SIAM J. App. Math, 2010
Redouane Qesmi, Susie ElSaadany, Jane Marie Heffernan, Jianhong Wu, “A Hepatitis B and C Virus Model with Age since Infection that Exhibits Backward Bifurcation”, SIAM Journal on Applied Mathematics, 2011