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Makur, Anamitra and Kumar, Akhil (1997) Iterative Error Diffusion Halftoning Using a Zero Phase Error Filter. In: International Conference on Image Processing, 1997, 26-29 October, Santa Barbara,California, Vol.1, 795-798.
Kumar, Akhil and Makur, Anamitra (1999) On the Phase Response of the Error Diffusion Filter for Image Halftoning. In: IEEE Transactions on Image Processing, 8 (9). pp. 1282-1292.