Switching to nonhyperbolic cycles from codim 2 bifurcations of   equilibria in ODEs
  The paper provides full algorithmic details on switching to the continuation of all possible codim 1 cycle bifurcations from generic codim 2 equilibrium bifurcation points in n-dimensional ODEs. We discuss the implementation and the performance of the algorithm in several examples, including an extended Lorenz-84 model and a laser system. 
Yu.A. Kuznetsov, H.G.E. Meijer, W. Govaerts, B. Sautois