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 "Cunnyngham, Jon",The spectral analysis of economic time series,,"U.S. Dept. of Commerce, Bureau of the Census",1963,Working paper,,,,https://cir.nii.ac.jp/crid/1130000793834535296