Organic residues from ultraviolet irradiation of interstellar ice analogs P. Modica, P. de Marcellus, D. Baklouti, R. Brunetto, M. Noun, S. Della Negra and L. Le Sergeant d’Hendecourt EAS Publications Series, 58 (2012) 343-347 Published online: 13 February 2013 DOI: 10.1051/eas/1258056