TY  - JOUR
AU  - Tomasz Nowicki
AU  - Sebastian van Strien
TI  - Invariant measures exist under a summability condition for unimodal maps.
JO  - Inventiones mathematicae
PY  - 1991
SP  - 123
EP  - 136
VL  - 105
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM_1991__105_3_143905/
ID  - IM_1991__105_3_143905
ER  -