1. J. Arora, P. Agarwal, and G. Gupta, Green Sustainable Chem., 7, 35 (2017).
2. M. Shahid, Shahid-Ul-Islam, and F. Mohammad, J. Cleaner Prod., 53, 310 (2013).
3. J. H. Hofenk de Graaff, W. G. Th Roelofs, and M. R. van Bommel, “The Colourful Past: Origins, Chemistry and Identification of Natural Dyestuffs”, Archetype Publications Ltd., 2004.
4. A. Sutlović, Đ. Parac-osterman, and V. Đurašević, Tedi, 1, 113 (2011).
5. H. Křízová in “Recent Developments in Fibrous Material Science” (D. Křemenáková, J. Militký, and R. Mishra Eds.), Kanina — o.p.s., 2016.