Solar EUV spectroscopic observations with SOHO/CDS - I. An in-flight calibration study G. Del Zanna, B. J. I. Bromage, E. Landi and M. Landini A&A, 379 2 (2001) 708-734 Published online: 15 November 2001 DOI: 10.1051/0004-6361:20011220