Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Toshinao Nakatsuka,Regions of autocorrelation coefficients and of their estimators in a stationary time series,Annals of the Institute of Statistical Mathematics,00203157,Tokyo : Institute of Statistical Mathematics,1977,29,3,p407-414,https://cir.nii.ac.jp/crid/1523388078266775168,