Infrared reflection spectra of forsterite crystal H. Sogawa, C. Koike, H. Chihara, H. Suto, S. Tachibana, A. Tsuchiyama and T. Kozasa A&A, 451 1 (2006) 357-361 Published online: 25 April 2006 DOI: 10.1051/0004-6361:20041538