Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) I. B. Frenkel and J. Lepowsky and A. Meurman,A natural representation of the Fischer-Griess Monster with the modular function J as character,Proceedings of the National Academy of Sciences,0027-8424,Proceedings of the National Academy of Sciences,1984-05,81,10,3256-3260,https://cir.nii.ac.jp/crid/1360574095091176960,https://doi.org/10.1073/pnas.81.10.3256