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\bibitem{Cervantes_etal2012} Cervantes, D., Fioresi, R., Lledo, M. A., \& Nadal, F. A. (2012). Quadratic deformation of Minkowski space. \textit{Fortschritte Phys.-Prog. Phys.}, \textit{60}(9-10), 970--976.

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