Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) SUZAKI Masahiko,New Alteration Detecting Technique for Printed Documents Using Dot Pattern Watermarking,Security and Watermarking of Multimedia Contents V-Proceedings of SPIE,,,2003,,,,https://cir.nii.ac.jp/crid/1572261550126719104,