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@article{MZ_1929__29_168099, author = {S. Bochner}, title = {\"Uber {Sturm-Liouvillesche} {Polynomsysteme.}}, journal = {Mathematische Zeitschrift}, pages = {730--736}, publisher = {mathdoc}, volume = {29}, year = {1929}, language = {de}, url = {http://geodesic.mathdoc.fr/item/MZ_1929__29_168099/} }
S. Bochner. Über Sturm-Liouvillesche Polynomsysteme.. Mathematische Zeitschrift, Tome 29 (1929), pp. 730-736. http://geodesic.mathdoc.fr/item/MZ_1929__29_168099/