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) Yusuke Higuchi and Tomoyuki Shirai,Some spectral and geometric properties for infinite graphs,Discrete Geometric Analysis,0271-4132,American Mathematical Society,2004,347,,29-56,https://cir.nii.ac.jp/crid/1361418521476769280,https://doi.org/10.1090/conm/347/06265