著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Motohiko Ezawa,Non-Hermitian higher-order topological states in nonreciprocal and reciprocal systems with their electric-circuit realization,Physical Review B,2469-9950,American Physical Society (APS),2019-05-21,99,20,201411,https://cir.nii.ac.jp/crid/1360286994936383232,https://doi.org/10.1103/physrevb.99.201411