@phdthesis{oai:twcu.repo.nii.ac.jp:00020309,
 author = {小林, 由佳},
 month = {2019-09-20, 2018-07-23},
 school = {東京女子大学},
 title = {Studies on Accurate and Efficient Solutions of Ill-Conditioned Linear Systems by Preconditioning Methods},
 year = {}
}