Discrete rearranging disordered patterns, part I: Robust statistical tools in two or three dimensions F. Graner, B. Dollet, C. Raufaste and P. Marmottant Eur. Phys. J. E, 25 4 (2008) 349-369 Published online: 30 April 2008 DOI: 10.1140/epje/i2007-10298-8