@article{weko_200776_1,
   author	 = "Akihiro,Ida and Hiroshi,Nakashima and Tasuku,Hiraishi and Ichitaro,Yamazaki and Rio,Yokota and Takeshi,Iwashita",
   title	 = "QR Factorization of Block Low-rank Matrices with Weak Admissibility Condition",
   journal	 = "情報処理学会論文誌コンピューティングシステム（ACS）",
   year 	 = "2019",
   volume	 = "12",
   number	 = "4",
   month	 = "nov"
}