%0 Journal Article %A Manfred Denker %A Mariusz Urbanski %T Absolutely Continuous Invariant Measures for Expansive Rational Maps with Rationally Indifferent Periodic Points. %J Forum mathematicum %D 1991 %P 561-580 %V 3 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/FORUM_1991__3_2_186407/ %F FORUM_1991__3_2_186407