TY  - JOUR
AU  - Johann Walter
TI  - Absolute Continuity of the Essential Spectrum of - ... + q (t) without Monotony of q.
JO  - Mathematische Zeitschrift
PY  - 1972
SP  - 83
EP  - 94
VL  - 129
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1972__129_171822/
ID  - MZ_1972__129_171822
ER  -