Quantification of segregation dynamics in ice mixtures K. I. Öberg, E. C. Fayolle, H. M. Cuppen, E. F. van Dishoeck and H. Linnartz A&A, 505 1 (2009) 183-194 Published online: 16 July 2009 DOI: 10.1051/0004-6361/200912464