Testing adiabatic contraction of dark matter in fossil group candidates J. Démoclès, G. W. Pratt, D. Pierini, M. Arnaud, S. Zibetti and E. D'Onghia A&A, 517 (2010) A52 Published online: 04 August 2010 DOI: 10.1051/0004-6361/201014328