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\bibitem{Nascimento_etal2020} Nascimento, J. R., Olmo, G. J., Porfirio, P. J., Petrov, A. Y., \& Soares, A. R. (2020). Nonlinear sigma-models in the Eddington-inspired Born-Infeld gravity. \textit{Phys. Rev. D}, \textit{101}(6), 064043--11pp.

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