Comparison of density estimation methods for astronomical datasets B. J. Ferdosi, H. Buddelmeijer, S. C. Trager, M. H. F. Wilkinson and J. B. T. M. Roerdink A&A, 531 (2011) A114 Published online: 23 June 2011 DOI: 10.1051/0004-6361/201116878