References
- “Die theoretischen Grundlagen des Mehrfarbenbuchdrucks” by H. Neugebauer, Z. Hiss. Phot. Photophysik Photochem., 36, 73 (1937).
- “Empirical determination of color errors,” by W. Rhodes, I, Pobboravsky and R. Norman. Techn. Ass. of the Graphic Arts, 11th Annual Meeting 1959, p. 233.