TY  - BOOK
AU  - Axelsson O ed.
ED  - International Conference on Preconditioned Conjugate Gradient Methods( 1989 : Nijmegen )
ED  - 
TI  - Preconditioned conjugate gradient methods: proceedings
U1  - 515 
PY  - 1990///
CY  - Berlin
PB  - Springer Verlag
KW  - Mathematical analysis
ER  -