@Article{ FraPraRiz17, author = { Franceschi, Valentina and Prandi, Dario and Rizzi, Luca }, title = { On the essential self-adjointness of singular sub-Laplacians }, journal = { Potential Anal. }, year = { 2020 }, doi = { 10.1007/s11118-018-09760-w }, volume = { 53 }, pages = { 89-112 }, URL = { http://cvgmt.sns.it/paper/3558/ }, note = { cvgmt preprint} }