Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
Ushijima Teruo,Note on the Spectrum of Some Schrödinger Operators,"Publications of the Research Institute for Mathematical Sciences, Kyoto University. Ser. A",0034-5318,Research Institute forMathematical Sciences,1968,4,2,497-509,https://cir.nii.ac.jp/crid/1390282680493860096,https://doi.org/10.2977/prims/1195194887