Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Choi Jun-Seok and Jin Young-Gwan and Lee Hyun-Chul and Im Yong-Taek,High Strength Bolt Manufacturing of Ultra-Fine Grained Aluminium Alloy 6061,MATERIALS TRANSACTIONS,13459678,The Japan Institute of Metals and Materials,2011,52,2,173-178,https://cir.nii.ac.jp/crid/1390282679225655552,https://doi.org/10.2320/matertrans.m2010309