%0 Journal Article %A L. Saloff-Coste %T Precise estimates on the rate at which certain diffusions tend to equilibrium. %J Mathematische Zeitschrift %D 1994 %P 641-677 %V 217 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1994__217_1_174711/ %F MZ_1994__217_1_174711