Interstellar ice analogs: band strengths of H2O, CO2, CH3OH, and NH3 in the far-infrared region B. M. Giuliano, R. M. Escribano, R. Martín-Doménech, E. Dartois and G. M. Muñoz Caro A&A, 565 (2014) A108 Published online: 20 May 2014 DOI: 10.1051/0004-6361/201423560