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
"Carmel, David and Yom-Tov, Elad",Estimating the query difficulty for information retrieval,,Morgan & Claypool,2010,"Synthesis lectures on information concepts, retrieval, and services",,9781608453573,,https://cir.nii.ac.jp/crid/1130282268801099648