著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL
"Koike, Ken-ichi",The Bhattacharyya type bound for the variance of sequential estimation procedures,,"Institute of Mathematics, University of Tsukuba",1996,Mathematical research note,,,,https://cir.nii.ac.jp/crid/1130282270747255808