Improved error diffusion incorporating a visual model. - Kevin E. Spaulding; Douglas W. Couwenhoven; Rodney L. Miller (Human Vision and Electronic Imaging, 1998)

Adaptive error diffusion algorithm incorporating a visual model. - Kevin E. Spaulding; Douglas W. Couwenhoven; Rodney L. Miller (J. Electronic Imaging, 1998)

Visibility of Ink Dots as Related to Dot Size and Visual Density. - Ming-Shih Lian; Qing Yu; Douglas W. Couwenhoven (PICS, 2002)

Computational Geometry Solution to Nonunique Forward Model Inversion for Multi-ink Printing. - Gustav J. Braun; Kevin E. Spaulding; John D'Errico; Douglas W. Couwenhoven (CIC, 2008)