Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) NAGEL DA,Stability of the upper lumbar spine following progressive disruptions and the application of individual internal and external fixation devices,J Bone Joint Surg [Am],,,1981,63,,62-70,https://cir.nii.ac.jp/crid/1570572700408652032,