@article{JRAM_1994__447_153594,
     author = {Joachim Michel and Lan Ma},
     title = {Regularity of local embeddings of strictly pseudoconvex {CR} structures.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {147--164},
     publisher = {mathdoc},
     volume = {447},
     year = {1994},
     zbl = {0791.32007},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1994__447_153594/}
}