TY - JOUR AU - Danchev, Peter TI - Warfield Invariants in Abelian Group Algebras JO - Collectanea mathematica PY - 2008 VL - 59 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CLTM_2008_2008_1_a11/ LA - en ID - CLTM_2008_2008_1_a11 ER -