Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Inoue Kohei and Urahama Kiichi,Non-Photorealistic Halftoning Using a Centroidal Voronoi Diagram and its Delaunay Triangulation,The Journal of The Institute of Image Information and Television Engineers,13426907,The Institute of Image Information and Television Engineers,2008,62,8,1326-1329,https://cir.nii.ac.jp/crid/1390282680074418176,https://doi.org/10.3169/itej.62.1326