TY  - JOUR
AU  - T. Küpper
TI  - Pointwise Lower and Upper Bounds for Eigenfunctions of Ordinary Differential Operators.
JO  - Numerische Mathematik
PY  - 1976
SP  - 111
EP  - 120
VL  - 27
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/NUMA_1976__27_132436/
ID  - NUMA_1976__27_132436
ER  -