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) Xiang Ni and Matthew Weiner and Andrea Alù and Alexander B. Khanikaev,Observation of higher-order topological acoustic states protected by generalized chiral symmetry,Nature Materials,1476-1122,Springer Science and Business Media LLC,2018-12-31,18,2,113-120,https://cir.nii.ac.jp/crid/1361699996005907328,https://doi.org/10.1038/s41563-018-0252-9