TY  - BOOK
AU  - Duff I S
TI  - Direct methods for spare matrices
T2  - Monographs on Numerical Analysis
U1  - B245:(D6,9(B), M6 
PY  - 1986///
CY  - Oxford
PB  - Clarendon Press         
KW  - Matrix
N1  - Bibliography:P313-26; Appendix:P281-96
ER  -