Ice features in the mid-IR spectra of galactic nuclei H. W. W. Spoon, J. V. Keane, A. G. G. M. Tielens, D. Lutz, A. F. M. Moorwood and O. Laurent A&A, 385 3 (2002) 1022-1041 Published online: 15 April 2002 DOI: 10.1051/0004-6361:20020147