1. Robertson GH. Diarylide Yellow and Orange pigments. In: Lewis PA, editor. The pigment handbook. 2nd ed. New York: John Wiley & Sons, 1988.
2. Christie RM. Pigments: structures and synthetic procedures. London: Oil and Colour Chemists, Association, 1993.
3. Herbst W, Hunger K. Industrial organic pigments. Weinheim: VCH, 1993. p. 238–44.
4. Christie RM, Standring PN. Dyes & Pigments, 11 (1989) 109.
5. Schmidt MU. In: Proceedings of Colour Science 98. Harrogate, UK, vol. 2, University of Leeds, 1998.