1. J. Rivlin, ’The dying of textile fibers — theory and practice’, Philadelphia College of Textile Science, Philadelphia 1992.
2. D. H. Solomon and D. G. Hawthorne, Chemistry of Pigments and Fillers, Wiley, New York 1983.
3. S. Yariv, in ‘Proc. 2nd Mediterranean clay meeting, Aveiro’, (C. S. F. Gomes, Editor), Portuguese Clay Society, University of Aveiro 1998, Vol. 1, p. 99.
4. S. Yariv, in ‘Organo-clay complexes and interactions’, (S. Yariv and H. Cross, Eds), Marcel Dekker, New York 2002, p. 463.
5. H. Zollinger, ’Color Chemistry’, VCH-Verlag, Weinheim 1987.