Infrared spectroscopy of HCOOH in interstellar ice analogues S. E. Bisschop, G. W. Fuchs, A. C. A. Boogert, E. F. van Dishoeck and H. Linnartz A&A, 470 2 (2007) 749-759 Published online: 02 May 2007 DOI: 10.1051/0004-6361:20077464