Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Ian L. Dryden and Alfred Kume and Huiling Le,Statistical inference for functions of the covariance matrix in the stationary Gaussian time-orthogonal principal components model,Annals of the Institute of Statistical Mathematics,00203157,Tokyo : Institute of Statistical Mathematics,2010-10,62,5,967-994,https://cir.nii.ac.jp/crid/1520010379866064128,