Improvement of Spectral Imaging by Pigment Mapping. - Yonghui Zhao; Roy S. Berns; Yoshio Okumura; Lawrence A. Taplin (CIC, 2005)

The Effect of Spectrocolorimeter Reproducibility on a Fully Color-managed Print Production Workflow. - Danny C. Rich; Yoshio Okumura; Veronika Lovell (CGIV/MCS, 2008)