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) Daehong Kim and Masakuni Matsuura,On a scattering length for additive functionals and spectrum of fractional Laplacian with a non‐local perturbation,Mathematische Nachrichten,0025-584X,Wiley,2019-11-29,293,2,327-345,https://cir.nii.ac.jp/crid/1360005514790756608,https://doi.org/10.1002/mana.201800254