X-ray imaging of the ionisation cones in NGC 5252 M. Dadina, M. Guainazzi, M. Cappi, S. Bianchi, C. Vignali, G. Malaguti and A. Comastri A&A, 516 (2010) A9 Published online: 16 June 2010 DOI: 10.1051/0004-6361/200913727