1. Modern physical techniques in colour formulation;Alderson;Journal of the Society of Dyers and Colourists,1961
2. Basic equations used in computer color matching;Allen;Journal of the Optical Society of America,1966
3. Basic equations used in computer color matching, II. Tristimulus match, two-constant theory;Allen;Journal of the Optical Society of America,1974
4. Ein beitrag zur optik der farbanstriche;Kubelka;Zeitschrift für Technishen Physik,1931
5. New contribution to the optics of intensely light-scattering materials;Kubelka;Part I. Journal of the Optical Society of America,1948