Ice absorption features in the 5-8 μm region toward embedded protostars J. V. Keane, A. G. G. M. Tielens, A. C. A. Boogert, W. A. Schutte and D. C. B. Whittet A&A, 376 1 (2001) 254-270 Published online: 15 September 2001 DOI: 10.1051/0004-6361:20010936