Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Michio Hasegawa and M. Sahashi and T. Mizoguchi and Toshiro Sato,Planar inductor for very small DC-DC convertors,[Proceedings] Thirteenth International Telecommunications Energy Conference - INTELEC 91,,IEEE,2002-12-09,,,709-713,https://cir.nii.ac.jp/crid/1872553968129185280,https://doi.org/10.1109/intlec.1991.172472