Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Kazuhiko Yamaguchi,Some Speculations on Shape and Number in Language,札幌医科大学医学部人文自然科学紀要,13430920,札幌 : 札幌医科大学,1999,,40,33-45,https://cir.nii.ac.jp/crid/1520290885370837632,