TY  - JOUR
AU  - Wolfgang Hackbusch
TI  - The Frequency Decomposition Multi-Grid Method. Part I: Application to Anisotropic Equations.
JO  - Numerische Mathematik
PY  - 1989
SP  - 229
EP  - 246
VL  - 56
IS  - 2-3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/NUMA_1989__56_2-3_133393/
ID  - NUMA_1989__56_2-3_133393
ER  -