Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) HATAYA Kengo and TANAKA Kiyoshi,Digital Watermark for Printing Documents Using Gabor Filter and Neuron Model,The Journal of the Institute of Image Electronics Engineers of Japan,02859831,The Institute of Image Electronics Engineers of Japan,2009,38,5,589-598,https://cir.nii.ac.jp/crid/1390282679587262336,https://doi.org/10.11371/iieej.38.589