%0 Journal Article %A Detlev W. Hoffmann %T On a conjecture of Izhboldin on similarity of quadratic forms %J Documenta mathematica %D 1999 %P 61-64 %V 4 %U http://geodesic.mathdoc.fr/articles/10.4171/dm/53/ %R 10.4171/dm/53 %F 10_4171_dm_53