Substructure of the galaxy clusters in the REXCESS sample: observed statistics and comparison to numerical simulationsH. Böhringer, G. W. Pratt, M. Arnaud, S. Borgani, J. H. Croston, T. J. Ponman, S. Ameglio, R. F. Temple and K. DolagA&A, 514 (2010) A32DOI: https://doi.org/10.1051/0004-6361/200913911