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@article{MZ_1978__164_172773, author = {John Douglas Moore and James H. White}, title = {Normal {Characteristic} {Forms:} {Conformal} {Invariance} and {Duality.}}, journal = {Mathematische Zeitschrift}, pages = {125--142}, publisher = {mathdoc}, volume = {164}, year = {1978}, zbl = {0378.53031}, url = {http://geodesic.mathdoc.fr/item/MZ_1978__164_172773/} }
John Douglas Moore; James H. White. Normal Characteristic Forms: Conformal Invariance and Duality.. Mathematische Zeitschrift, Tome 164 (1978), pp. 125-142. http://geodesic.mathdoc.fr/item/MZ_1978__164_172773/