@article{AIF_2004__54_2_431_0,
     author = {Montanari, Annamaria and Morbidelli, Daniele},
     title = {Balls defined by nonsmooth vector fields and the {Poincar\'e} inequality},
     journal = {Annales de l'Institut Fourier},
     pages = {431--452},
     publisher = {Association des Annales de l{\textquoteright}institut Fourier},
     volume = {54},
     number = {2},
     year = {2004},
     doi = {10.5802/aif.2024},
     zbl = {1069.46504},
     language = {en},
     url = {http://www.numdam.org/articles/10.5802/aif.2024/}
}