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@article{MAN_1959__139_160742, author = {H.L. ROYDEN}, title = {The {Analytic} {Approximation} of {Differentiable} {Mappings.}}, journal = {Mathematische Annalen}, pages = {171--179}, publisher = {mathdoc}, volume = {139}, year = {1959}, zbl = {0091.37003}, url = {http://geodesic.mathdoc.fr/item/MAN_1959__139_160742/} }
H.L. ROYDEN. The Analytic Approximation of Differentiable Mappings.. Mathematische Annalen, Tome 139 (1959), pp. 171-179. http://geodesic.mathdoc.fr/item/MAN_1959__139_160742/