Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) L. Folks and R.C. Woodward,The use of MFM for investigating domain structures in modern permanent magnet materials,Journal of Magnetism and Magnetic Materials,0304-8853,Elsevier BV,1998-12,190,1-2,28-41,https://cir.nii.ac.jp/crid/1360298345501597440,https://doi.org/10.1016/s0304-8853(98)00272-8