Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Kimura Yuuji and Inoue Tadanobu,Mechanical Property of Ultrafine Elongated Grain Structure Steel Processed by Warm Tempforming and Its Application to Ultra-High-Strength Bolt,ISIJ International,00211575,The Iron and Steel Institute of Japan,2020-06-15,60,6,1108-1126,https://cir.nii.ac.jp/crid/1390285300164450304,https://doi.org/10.2355/isijinternational.isijint-2019-726