Stability, multiplicity and global continuation of symmetric periodic solutions of a nonlinear Volterra integral equation / S-N. Chow, O. Diekmann, J. Mallet-ParetVirtual periods and global continuation of periodic orbits / S-N. ChowThe ghost solution of the logistic equation and a singular perturbation problem / by S.-N. Chow, E.M. de Jager, R. LutzStability, multiplicity and global continuation of symmetric periodic solutions of a nonlinear Volterrra integral equation / S-N. Chow, O. Diekmann, J. Mallet-Paret