Changjun Li Zheng Li Xinhui Shao Yiyong Nie David J. Evans Optimum parameter for the SOR-like method for augmented systems. 749-763 2004 81 Int. J. Comput. Math. 6 http://dx.doi.org/10.1080/00207160410001688646 db/journals/ijcm/ijcm81.html#LiLSNE04