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@article{MAN_1975__217_162765, author = {Dirk Ferus}, title = {Isometric {Immersions} of {Constant} {Curvature} {Manifolds.}}, journal = {Mathematische Annalen}, pages = {155--156}, publisher = {mathdoc}, volume = {217}, year = {1975}, zbl = {0295.53026}, url = {http://geodesic.mathdoc.fr/item/MAN_1975__217_162765/} }
Dirk Ferus. Isometric Immersions of Constant Curvature Manifolds.. Mathematische Annalen, Tome 217 (1975), pp. 155-156. http://geodesic.mathdoc.fr/item/MAN_1975__217_162765/