@article{oai:ismrepo.ism.ac.jp:00032199,
 author = {青山, 博次郎 and 田中, 貞子 and Aoyama, Hirojiro and Tanaka, Sadako},
 issue = {1},
 journal = {統計数理研究所彙報},
 month = {Jun},
 pages = {49--51},
 title = {20次の逆行列の計算誤差について},
 volume = {5},
 year = {1957}
}