Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Hung-Kuo Chu and Chia-Sheng Chang and Ruen-Rone Lee and Niloy J. Mitra,Halftone QR codes,ACM Transactions on Graphics,0730-0301,Association for Computing Machinery (ACM),2013-11,32,6,1-8,https://cir.nii.ac.jp/crid/1360292618594228352,https://doi.org/10.1145/2508363.2508408