@article{MZ_1982__180_173201,
     author = {Joachim Weidmann},
     title = {Absolut stetiges {Spektrum} bei {Sturm-Liouville-Operatoren} und {Dirac-Systemen.}},
     journal = {Mathematische Zeitschrift},
     pages = {423--428},
     publisher = {mathdoc},
     volume = {180},
     year = {1982},
     zbl = {0479.34007},
     url = {http://geodesic.mathdoc.fr/item/MZ_1982__180_173201/}
}