Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) KIRITA Y,Surgical treatment for the ossification of the ligamentum flavum,Chubu Nippon Seikeigeka Saigaigeka Gakkai Zasshi,,,1973,16,,814-817,https://cir.nii.ac.jp/crid/1570291225575013120,