@article{10_4007_annals_2007_166_183,
     author = {Charles L. Epstein},
     title = {Subelliptic $\mathrm{Spin}_{\mathbb{C}}$ {Dirac} operators, {I}},
     journal = {Annals of mathematics},
     pages = {183--214},
     publisher = {mathdoc},
     volume = {166},
     number = {1},
     year = {2007},
     doi = {10.4007/annals.2007.166.183},
     mrnumber = {2342694},
     zbl = {1154.32016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4007/annals.2007.166.183/}
}