Author	Title	Journal	ISSN	Publisher	Date	Volume	Number	Page	URL	URL(DOI)
HIRANO Satoshi,AOTA Kinya	250 Microstructure and mechanical properties of friction stir welded ultra fine grained steels not contain the Nb, Ti : Friction Stir Welding for ultra fine grained steels (Patr 2)	Pre-Prints of the National Meeting of JWS		Japan Welding Society	2005-08-20		77	172-173	http://ci.nii.ac.jp/naid/110004557171/en/