Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) KATSURADA M.,A mathematical study of the charge simulation method II,"J. Fac. Sci. Univ. Tokyo, Sec. IA, Math.",,,1989,36,,135-162,https://cir.nii.ac.jp/crid/1571980074747144704,