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\bibitem{Ellis_etal2019} Ellis, J., Konoplich, R., Mavromatos, N. E., Nguyen, L., Sakharov, A. S., \& Sarkisyan-Grinbaum, E. K. (2019). Robust constraint on Lorentz violation using Fermi-LAT gamma-ray burst data. \textit{Phys. Rev. D}, \textit{99}(8), 083009--22pp.

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