1. Bayer, B.: Color imaging array. U.S. patent 3,971,065 (1976)
2. Ulichney, R.A. (Digital Equipment Corporation), Void and cluster apparatus and method for generating dither templates. U.S. patent 5,535,020 (1992)
3. Ancin, H., Bhattacharjya, A., Shu, J. (Seiko Epson Corporation), Void-and-cluster dither-matrix generation for better half-tone uniformity. U.S. patent 6,088,512 (1997)
4. Floyd, R.W., Steinberg, L.: An adaptive algorithm for spatial grey scale. Proceedings of the Society of Information Display 17, 75–77 (1976)
5. Metaxas, P.: Optimal Parallel Error-Diffusion Dithering. In: Color Imaging: Device-Indep. Color, Color Hardcopy, and Graphic Arts IV, Proc. SPIE, vol. 3648, pp. 485–494 (1999)