S. L. T. de Souza and Caldas, I. L., “Calculation of Lyapunov exponents in systems with impacts”, Chaos, Solitons & Fractals, vol. 19, no. 3, pp. 569 - 579, 2004.

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S. L. T. de Souza and Caldas, I. L., “Controlling chaotic orbits in mechanical systems with impacts”, Chaos, Solitons & Fractals, vol. 19, no. 1, pp. 171 - 178, 2004.

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S. L. T. de Souza, Caldas, I. L., Viana, R. L., and Balthazar, J. M., “Sudden changes in chaotic attractors and transient basins in a model for rattling in gearboxes”, Chaos, Solitons & Fractals, vol. 21, no. 3, pp. 763 - 772, 2004.

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S. L. T. de Souza, Caldas, I. L., Balthazar, J. M., and Brasil, R. M. L. R. F., “Analysis of Regular and Irregular Dynamics of a Non Ideal Gear Rattling Problem”, Journal of the Brazilian Society of Mechanical Sciences, vol. 24, no. 2, 2002.

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S. L. T. de Souza and Caldas, I. L., “Basins of Attraction and Transient Chaos in a Gear-Rattling Model”, Journal of Vibration and Control, vol. 7, no. 6, pp. 849 - 862, 2001.

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