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\bibitem{Hati_etal2017} Hati, C., Patra, S., Reig, M., Valle, J. W. F., \& Vaquera-Araujo, C. A. (2017). Towards gauge coupling unification in left-right symmetric SU(3)(c) x SU(3)(L) x SU(3)(R) x U(1)(X) theories. \textit{Phys. Rev. D}, \textit{96}(1), 015004--9pp.

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