中国科学院数学与系统科学研究院期刊网
OPTIMIZATION OF THE SCHUR COMPLEMENT MATRIX BASED PRECONDITIONING TECHNIQUES ON A CLASS OF BLOCK 2×2 STRUCTURE MATRICES
Li Digen, Wang Xiang, Zhou Peng, Liao Lidan
Mathematica Numerica Sinica . 2024, (3): 341 -369 .  DOI: 10.12286/jssx.j2023-1148