A Grammar of Color. Edited and with an Introduction by Faber Birren. Van Nostrand Reinhold Company, New York, 1969.

F. Ebner, M.D. Fairchild. Development and testing of a color space (IPT) with improved hue uniformity. Color and Imaging Conference 1998 (1), 8-13.

Robert W.G. Hunt. The Challenge of our Unknown Knowns. Color and Imaging Conference 2010 (1), 280-284.

Rolf. G. Kuehni. Color Space and its Divisions. John Wiley & Sons, Hoboken, 2003.

Alfredo Restrepo. Colour Processing in Runge Space. Proc. SPIE 7870, Image Processing: Algorithms and Systems IX, 78700P (4 February 2011).

Farb-Systeme 1611-2007 herausgegeben von Werner Spillmann. Schwabe Verlag, Basel, 2009.