First identification and modelling of SPI background lines G. Weidenspointner, J. Kiener, M. Gros, P. Jean, B. J. Teegarden, C. Wunderer, R. C. Reedy, D. Attié, R. Diehl, C. Ferguson et al. (10 more) A&A, 411 1 (2003) L113-L116 Published online: 17 November 2003 DOI: 10.1051/0004-6361:20031209