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@article{MZ_1967__98_170751, author = {Joachim Weidmann}, title = {Zur {Spektraltheorie} von {Sturm-Liouville-Operatoren.}}, journal = {Mathematische Zeitschrift}, pages = {268--302}, publisher = {mathdoc}, volume = {98}, year = {1967}, language = {de}, url = {http://geodesic.mathdoc.fr/item/MZ_1967__98_170751/} }
Joachim Weidmann. Zur Spektraltheorie von Sturm-Liouville-Operatoren.. Mathematische Zeitschrift, Tome 98 (1967), pp. 268-302. http://geodesic.mathdoc.fr/item/MZ_1967__98_170751/