@article{JEDP_1981____A3_0,
     author = {Kohn, J. J.},
     title = {Subelliptic estimates},
     journal = {Journ\'ees \'equations aux d\'eriv\'ees partielles},
     eid = {3},
     pages = {1--7},
     publisher = {Ecole polytechnique},
     year = {1981},
     zbl = {0487.35037},
     language = {en},
     url = {http://www.numdam.org/item/JEDP_1981____A3_0/}
}