Relative locality in a quantum spacetime and the pregeometry of κ-Minkowski Giovanni Amelino-Camelia, Valerio Astuti and Giacomo Rosati Eur. Phys. J. C, 73 8 (2013) 2521 Published online: 08 August 2013 DOI: 10.1140/epjc/s10052-013-2521-8