著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) TAYLOR S. J.,Financial returns modelled by the product of two stochastic processes-A study of the daily sugar prices 1961-75,Time Series Analysis : Theory and Practice,,North-Holland,1982,1,,203-226,https://cir.nii.ac.jp/crid/1571417125349824256,