%0 Journal Article %A Bass, D. W. %T Topologically Versal Deformations of Matrices; Codimension at most Two %J Canadian journal of mathematics %D 1981 %P 168-180 %V 33 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1981-015-2/ %R 10.4153/CJM-1981-015-2 %F 10_4153_CJM_1981_015_2