Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Fukuoka Katsuhiro and Kobayashi Masaki and Ozaki Tomohiro and Oikawa Yoshiro,Consideration of Multi-coil Type Magnetization System for Magnetic Particle Testing of Omnidirectional Crack in All Surfaces of 3D Shape Test Object,IEEJ Transactions on Fundamentals and Materials,03854205,The Institute of Electrical Engineers of Japan,2018,138,4,141-146,https://cir.nii.ac.jp/crid/1390001204598329088,https://doi.org/10.1541/ieejfms.138.141