@Article{NM-16-28,
author = { C. Cheng, X. Jin and V. Sin},
title = {Stability of T Chan's preconditioner from numerical range},
journal = {Numerical Mathematics, a Journal of Chinese Universities},
year = {2007},
volume = {16},
number = {1},
pages = {28--36},
abstract = {},
issn = {},
doi = {https://doi.org/},
url = {http://global-sci.org/intro/article_detail/nm/8047.html}
}