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@article{IM_1978__48_142583, author = {Hing-Sun Luk}, title = {Normalization of {Differential} {Equations} {Defining} a {CR} {Structure.}}, journal = {Inventiones mathematicae}, pages = {33--60}, publisher = {mathdoc}, volume = {48}, year = {1978}, zbl = {0389.32006}, url = {http://geodesic.mathdoc.fr/item/IM_1978__48_142583/} }
Hing-Sun Luk. Normalization of Differential Equations Defining a CR Structure.. Inventiones mathematicae, Tome 48 (1978), pp. 33-60. http://geodesic.mathdoc.fr/item/IM_1978__48_142583/