LonGSp: The Gornergrat longslit infrared spectrometer L. Vanzi, M. Sozzi, G. Marcucci, A. Marconi, F. Mannucci, F. Lisi, L. Hunt, E. Giani, S. Gennari, V. Biliotti and C. Baffa Astron. Astrophys. Suppl. Ser., 124 3 (1997) 573-577 Published online: 15 September 1997 DOI: 10.1051/aas:1997207