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

Analyzing the structure of representations via approximations
in Representation Theory of Algebras and Related Topics (Mexico City
1994) (R. Bautista, R. Martinez-Villa, and J.A. de la Pena, Eds.)
Canad. Math. Soc. Conf. Proc. Series 19 (1996) 373-406