Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Nagaoka H.,An approach to the continuous‐time stability criterion of polynomial matrices via orthogonal polynomial matrices,"Trans. (A), I. E. C. E., Japan",,,1985,68,,6,https://cir.nii.ac.jp/crid/1370861288146320385,