@article{GDZPPN00239975X,
title = {Zur Spektraltheorie von Sturm-Liouville-Operatoren.},
journal = {Mathematische Zeitschrift},
volume = {99},
year = {1967},
pages = {268-302},
language = {de},
url = {http://dml.mathdoc.fr/item/GDZPPN00239975X}
}
Weidmann, Joachim. Zur Spektraltheorie von Sturm-Liouville-Operatoren.. Mathematische Zeitschrift, Tome 99 (1967) pp. 268-302. http://gdmltest.u-ga.fr/item/GDZPPN00239975X/