Radioimmunotherapy of relapsed non-Hodgkin's lymphoma with zevalin, a 90Y-labeled anti-CD20 monoclonal antibody. - Wiseman,G.A.; White,C.A.; Witzig,T.E.; Gordon,L.I.; Emmanouilides,C.; Raubitschek,A.; Janakiraman,N.; Gutheil,J.; Schilder,R.J.; Spies,S.; Silverman,D.H.; Grillo-Lopez,A.J. (Clin Cancer Res, 1999)