Birge Huisgen-Zimmermann
Department of Mathematics
University of California at Santa Barbara
Santa Barbara, CA 93106

The phantom menace in representation theory
in Algebra and Its Applications (Athens, Ohio 1999) (D. Van Huynh, S.K.
Jain, and S.R. Lopez-Permouth, Eds.)
Contemp. Math. 259 (2000) 247-278