Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) TADA Naoya and NAKAYAMA Eisuke and KITAMURA Takayuki and OHTANI Ryuichi,Analysis of Direct Current Potential Field around Multiple Spherical Defect.,TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A,03875008,The Japan Society of Mechanical Engineers,1999,65,632,693-700,https://cir.nii.ac.jp/crid/1390001204446896768,https://doi.org/10.1299/kikaia.65.693