TY  - JOUR
AU  - J.J. Schäffer
TI  - Linear Differential Equations and Functional Analysis, VIII.
JO  - Mathematische Annalen
PY  - 1963
SP  - 57
EP  - 100
VL  - 151
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MAN_1963__151_161070/
ID  - MAN_1963__151_161070
ER  -