@article{10_1090_S0894_0347_1990_1071115_4,
     author = {Burns, Daniel M. and Epstein, Charles L.},
     title = {Embeddability for three-dimensional {CR-manifolds}},
     journal = {Journal of the American Mathematical Society},
     pages = {809--841},
     publisher = {mathdoc},
     volume = {03},
     number = {4},
     year = {1990},
     doi = {10.1090/S0894-0347-1990-1071115-4},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-1990-1071115-4/}
}