1. Vat dyes and their application.;Aspland;Text. Chem. Color.,1992
2. Past, present and future of supercritical fluid dyeing technology: an overview.;Bach;Color. Technol.,2002
3. ETAD. (1995). German Ban of use of certain azo compounds in some consumer goods, ETAD Information Notice No. 6.
4. Gürses, A. (2019). Sustainable Colorant, in The Impacts and Prospects of Green Chemistry for Textile Technology, Islam, S. and Butola, B.S. (eds.), Woodhead Publishing Series on Textiles, Elsevier Ltd, chapter 2.