1. The Hopf bifurcation and the existence and stability of closed orbits in multisector models of economic growth;Benhabib,1978
2. Qualitative integration of a system of n differential equations in a region containing a singular point and a limit cycle;Bruslinskaya;Soviet Mathematics Doklady,1961
3. The bifurcation of one or more closed orbits from an equilibrium point of an autonomous differential system;Chaffee;Journal of Differential Equations,1968
4. The Hopf bifurcation and its applications;Marsden,1976
5. Optimal growth with intertemporally dependent preferences;Ryder;Review of Economic Studies,1973