Observation of an eclipse of U-3 Titania by U-2 Umbriel on December 8, 2007 with ESO-VLT J.-E. Arlot, C. Dumas and B. Sicardy A&A, 492 2 (2008) 599-602 Published online: 15 October 2008 DOI: 10.1051/0004-6361:200810134