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
"Engle, R. F. (Robert F.) and Ng, Victor and Rothschild, Michael and National Bureau of Economic Research",Asset pricing with a factor arch covariance structure : empirical estimates for treasury bills,,National Bureau of Economic Research,1988,NBER technical paper series,,,,https://cir.nii.ac.jp/crid/1130000795361815680