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@article{CMH_1966__41_139308, author = {Richard Sacksteder}, title = {Degeneracy of {Orbits} of {Actions} of {Rm} on a {Manifold.}}, journal = {Commentarii mathematici Helvetici}, pages = {1--9}, publisher = {mathdoc}, volume = {41}, year = {1966}, zbl = {0168.20901}, url = {http://geodesic.mathdoc.fr/item/CMH_1966__41_139308/} }
Richard Sacksteder. Degeneracy of Orbits of Actions of Rm on a Manifold.. Commentarii mathematici Helvetici, Tome 41 (1966), pp. 1-9. http://geodesic.mathdoc.fr/item/CMH_1966__41_139308/