%0 Journal Article %A Józefiak, Tadeusz %A Sagan, Bruce E. %T Basic derivations for subarrangements of Coxeter arrangements %J Journal of Algebraic Combinatorics %D 1993 %P 291-320 %V 2 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/JAC_1993__2_3_a0/ %G en %F JAC_1993__2_3_a0