@article{10_4007_annals_2010_171_1683,
     author = {Erik van Erp},
     title = {The {Atiyah-Singer} index formula for subelliptic operators on contact manifolds. {Part} {II}},
     journal = {Annals of mathematics},
     pages = {1683--1706},
     publisher = {mathdoc},
     volume = {171},
     number = {3},
     year = {2010},
     doi = {10.4007/annals.2010.171.1683},
     mrnumber = {2680396},
     zbl = {1206.19005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4007/annals.2010.171.1683/}
}