TY  - RPRT
TI  - Preconditioners for the spectral multigrid method
AU  - Phillips, T. N.
AU  - Zang, T. A.
AU  - Hussaini, M. Y.
PY  - 1983
UR  - https://ntrs.nasa.gov/citations/19830026391
ID  - 19830026391
ER  -