R. Schiltzhol, W. G. Unruh, Large-scale non-locality in "doubly special relativity" with an energy-dependent speed of light, arXiv:gr-qc/0308049v2, JEEP Lett. 78 (2003) 431-435; Pisma Zh.Eksp.Teor.Fiz. 78 (2003) 899-903. [9] G. Amelino-Camelia, Enlarged Bound on the Measurability of Distances and Quantum