C. V. Abud and Caldas, I. L., “Secondary nontwist phenomena in area-preserving maps”, Chaos: An Interdisciplinary Journal of Nonlinear Science, vol. 22, no. 3, p. 033142, 2012.

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I. L. Caldas, Viana, R. L., Abud, C. V., da Fonseca, J. D., Guimarães-Filho, Z. O., Kroetz, T., Marcus, F. A., Schelin, A. B., Szezech, J. D., Toufen, D. L., Benkadda, S., Lopes, S. R., Morrison, P. J., Roberto, M., Gentle, K. W., Kuznetsov, Y. K., and Nascimento, I. C., “Shearless transport barriers in magnetically confined plasmas”, Plasma Physics and Controlled Fusion, vol. 54, no. 12, p. 124035, 2012.

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C. V. Abud and Caldas, I. L., “Onset of shearless magnetic surfaces in tokamaks”, Nuclear Fusion, vol. 54, no. 6, p. 064010, 2014.

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C. V. Abud and Caldas, I. L., “Impact of punctual flat magnetic shear on the field line transport”, Physics of Plasmas, vol. 22, no. 6, p. 062510, 2015.

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C. V. Abud and Caldas, I. L., “On Slater’s criterion for the breakup of invariant curves”, Physica D: Nonlinear Phenomena, vol. 308, pp. 34 - 39, 2015.

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R. L. Viana, Caldas, I. L., Jr., J. D. Szezech, Batista, A. Marcos, Abud, C. V., Schelin, A. B., Mugnaine, M., Santos, M. S., Leal, B. B., Bartoloni, B. F., Mathias, A. C., Gomes, J. V., and Morrison, P. J., “Transport Barriers in Symplectic Maps”, Brazilian Journal of Physics, vol. 51, no. 3, pp. 899-909, 2021.

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