What is a cool-core cluster? a detailed analysis of the cores of the X-ray flux-limited HIFLUGCS cluster sampleD. S. Hudson, R. Mittal, T. H. Reiprich, P. E. J. Nulsen, H. Andernach and C. L. SarazinA&A, 513 (2010) A37DOI: https://doi.org/10.1051/0004-6361/200912377
