@article{GDZPPN002438135,
title = {Note on the absolutely continuous spectrum of Sturm-Liouville operators.},
journal = {Mathematische Zeitschrift},
volume = {205},
year = {1990},
pages = {491-498},
zbl = {0713.34030},
url = {http://dml.mathdoc.fr/item/GDZPPN002438135}
}
Schneider, Albert; Mantlik, Frank. Note on the absolutely continuous spectrum of Sturm-Liouville operators.. Mathematische Zeitschrift, Tome 205 (1990) pp. 491-498. http://gdmltest.u-ga.fr/item/GDZPPN002438135/