Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Matsumoto T,A real‐valued periodic orthogonal sequence derived from a real‐valued shift‐orthogonal finite‐length sequence and its fast periodic correlation algorithm,Trans IEICE,,,2006,89,,323,https://cir.nii.ac.jp/crid/1370579923395839233,