Infrared spectroscopy of solid CO–CO2 mixtures and layersF. A. van Broekhuizen, I. M. N. Groot, H. J. Fraser, E. F. van Dishoeck and S. SchlemmerA&A, 451 2 (2006) 723-731DOI: https://doi.org/10.1051/0004-6361:20052942