%0 Journal Article
%T Upper Triangular Invariants
%J Canadian mathematical bulletin
%D 1985
%P 243-248
%V 28
%N 2
%U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1985-030-2/
%R 10.4153/CMB-1985-030-2
%F 10_4153_CMB_1985_030_2