A benchmark study for CHIANTI based on RESIK solar flare spectra C. Chifor, G. Del Zanna, H. E. Mason, J. Sylwester, B. Sylwester and K. J. H. Phillips A&A, 462 1 (2007) 323-330 Published online: 24 October 2006 DOI: 10.1051/0004-6361:20066261