1. Anonymous. (1972). The wealth of India raw materials, National Institute of Science Communication and Information Resources. New Delhi: CSIR. Vol. 9, Rh-So, 82-83.
2. Anonymous. (2006). The wealth of India raw materials, National Institute of Science Communication and Information Resources. New Delhi: CSIR. Vol. 1, A-F, 7-8.
3. Bhattacharya, S. D., & Shah, A. K. (2000). Metal ion effect on dyeing of wool fabric with catechu. Journal of Society of Dyers and Colorists, 116, 10–12.
4. Bhattacharyya, N., & Lohia, N. (2002). Dyeing of cotton and polyester fiber with pomegranate rind, catechu, nova red and turmeric. Asian Textile Journal, 11, 70–74.
5. Burkinshaw, S. M., & Kumar, N. (2009). The mordant dyeing of wool using tannic and FeSO4, part 1: initial findings. Dyes and Pigments, 80, 53–60.