%0 Journal Article %A D. Pickrell %T H4(BK, Z) and Operator Algebras %J Journal of Lie Theory %D 2004 %P 199-213 %V 14 %N 1 %U https://jolt.centre-mersenne.org/articles/10.5802/jolt.334/ %R 10.5802/jolt.334 %F JOLT_2004_14_1_a10