Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Kazumasa Nomura and Paul Terwilliger,"Krawtchouk polynomials, the Lie algebra sl2, and Leonard pairs",Linear Algebra and its Applications,0024-3795,Elsevier BV,2012-07-01,437,,345-375,https://cir.nii.ac.jp/crid/1872835442581977344,https://doi.org/10.1016/j.laa.2012.02.006