@article{PMIHES_1989__69__203_0,
     author = {Benedicks, Michael and Misiurewicz, Michal},
     title = {Absolutely continuous invariant measures for maps with flat tops},
     journal = {Publications Math\'ematiques de l'IH\'ES},
     pages = {203--213},
     publisher = {Institut des Hautes \'Etudes Scientifiques},
     volume = {69},
     year = {1989},
     mrnumber = {1019965},
     zbl = {0703.58030},
     language = {en},
     url = {http://www.numdam.org/item/PMIHES_1989__69__203_0/}
}