Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) 中山 陽介,Systematization of the Original Characters of Hiragana,国語研究,04506677,國學院大學国語研究会,2021-02,84,,32-47,https://cir.nii.ac.jp/crid/1390013972160211968,https://doi.org/10.57529/00000960