%0 Journal Article %A Drensky, Vesselin %A Giambruno, Antonio %T Cocharacters, Codimensions and Hilbert Series of the Polynomial Identities for 2 × 2 Matrices with Involution %J Canadian journal of mathematics %D 1994 %P 718-733 %V 46 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1994-040-6/ %R 10.4153/CJM-1994-040-6 %F 10_4153_CJM_1994_040_6