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) Koutaro Okada and Hiroki Koga,A Construction of the (4; n)-Threshold Visual Cryptography Scheme Using a 3-Design,IEICE Proceeding Series,2188-5079,"The Institute of Electronics, Information and Communication Engineers",2018-10-18,55,,223-227,https://cir.nii.ac.jp/crid/1390564227332962688,https://doi.org/10.34385/proc.55.mo-pm-2-2.4