1. An adaptive algorithm for spatial gray-scale;Floyd,1976
2. A survey of techniques for the display of continuous tone pictures on bilevel displays
3. Handbook of Print Media
4. D.L. Lau and G.R. Arce, Modern digital halftoning, 2nd ed. New York, Marcel Dekker (2011)
5. Neural net based digital halftoning of images;Anastassiou,1988