IAU telegram 7447 (3 July 2000, Recovery of S/1999 U 3)
IAU telegram 7450 (8 July 2000, Recovery of S/1999 U 1)
IAU telegram 7473 (3 August 2000, Recovery of S/1999 U 2)
At the IAU 2000 General Assembly in Manchester, the names proposed by the discoverers for all 5 satellites have been approvied by the IAU. See IAU telegram 7479 (21 August 2000, Naming of all 3 satellites)
and the technical information page for more information.