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\bibitem{Ellis_etal2019} Ellis, J., Mavromatos, N. E., Sakharov, A. S., \& Sarkisyan-Grinbaum, E. K. (2019). Limits on neutrino Lorentz violation from multimessenger observations of TXS 0506+056. \textit{Phys. Lett. B}, \textit{789}, 352--355.

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