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\bibitem{Barbero_etal2018} Barbero, J. F., Ferreiro, A., Navarro-Salas, J., \& Villase{\~n}or, E. J. S. (2018). Adiabatic expansions for Dirac fields, renormalization, and anomalies. \textit{Phys. Rev. D}, \textit{98}(2), 025016--11pp.

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