@inbook{4f124e78fe7e4591b634af5e0bb4420d,
title = "Superdegenerate hypoelliptic differential operators",
keywords = "Hypoellipticity, H{\"o}rmander{\textquoteright}s therem, Malliavin calculus, Superdegenerate differential operator",
author = "Denis Bell",
note = "Publisher Copyright: {\textcopyright} 2016 American Mathematical Society.",
year = "2016",
doi = "10.1090/conm/668/13393",
language = "English",
series = "Contemporary Mathematics",
pages = "13--20",
booktitle = "Contemporary Mathematics",
}