%0 Journal Article %A Fefferman, R. %T A criterion for the absolute continuity of the harmonic measure associated with an elliptic operator %J Journal of the American Mathematical Society %D 1989 %P 127-135 %V 02 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-1989-0955604-8/ %R 10.1090/S0894-0347-1989-0955604-8 %F 10_1090_S0894_0347_1989_0955604_8