Birge Huisgen-Zimmermann Department of Mathematics University of California at Santa Barbara Santa Barbara, CA 93106 Sverre O. Smalo Department of Mathematics The Norwegian University for Science and Technology 7055 Dragvoll, Norway Co- versus contravariant finiteness of categories of representations in Advances in Ring Theory (S.K. Jain and S.T. Rizvi, Eds.), pp. 129-144 Boston (1997) Birkhaeuser