INTEGRAL/SPI ground calibration D. Attié, B. Cordier, M. Gros, Ph. Laurent, S. Schanne, G. Tauzin, P. von Ballmoos, L. Bouchet, P. Jean, J. Knödlseder et al. (23 more) A&A, 411 1 (2003) L71-L79 Published online: 17 November 2003 DOI: 10.1051/0004-6361:20031302