Hat mitgewirkt an:
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Geometric theory of dynamical systems : an introd.
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Geometric dynamics : proceedings of the internat. symposium, held at the Inst. de Matemática Pura e Aplicada, Rio de Janeiro, Brasil, July - August 1981
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Non-uniformly hyperbolic horseshoes arising from bifurcations of Poincaré heteroclinic cycles
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Geometry and topology : proceedings of the school held at the Inst. de. Matemática Pura e Aplicada, CNPq, Rio de Janeiro, July 1976