Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MZ_1958__69_169726, author = {Horst Leptin}, title = {Zur {Reduktionstheorie} {Hilbertscher} {R\"aume.}}, journal = {Mathematische Zeitschrift}, pages = {40--58}, publisher = {mathdoc}, volume = {69}, year = {1958}, zbl = {0078.10401}, url = {http://geodesic.mathdoc.fr/item/MZ_1958__69_169726/} }
Horst Leptin. Zur Reduktionstheorie Hilbertscher Räume.. Mathematische Zeitschrift, Tome 69 (1958), pp. 40-58. http://geodesic.mathdoc.fr/item/MZ_1958__69_169726/