Detection of solid ammonia, methanol, and methane with ISOPHOTJ. Gürtler, U. Klaas, Th. Henning, P. Ábrahám, D. Lemke, K. Schreyer and K. LehmannA&A, 390 3 (2002) 1075-1087DOI: https://doi.org/10.1051/0004-6361:20020772
