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The behaviour of solutions lying on an invariant 2-torus arising from the bifurcation of a periodic solution. (English) Zbl 0512.58026
Applications of nonlinear analysis in the physical sciences, Pap. Workshop, Bielefeld 1979, 92-114 (1981).

37G99 Local and nonlocal bifurcation theory for dynamical systems
34C25 Periodic solutions to ordinary differential equations