by Francis, Paul J, Williger, Gerard M, Collins, Nicholas R, Palunas, Povilas, Malumuth, Eliot M, Woodgate, Bruce E, Teplitz, Harry I, Smette, Alain, Sutherland, Ralph S, Danks, Anthony C, Hill, Robert S, Lindler, Donald, Kimble, Randy A, Heap, Sara R, Hutchings, John B
Published in The Astrophysical journal (20.06.2001)