1. J. Cagerra, P. Puente, and J. Valldeperos, “The Dyeing of Textile Materials”, p.11, Texilia, Biella, 1992.
2. B. C. Burdett in “The Theory of Coloration Textiles”, (C. L. Bird and W. S. Boston Eds.), p.137, Dyers Company Publications Trust, W. Yorkshire, 1975.
3. P. Rys and H. Zollinger in “The Theory of Coloration Textiles”, (C. L. Bird and W. S. Boston Eds.), p.346, Dyers Company Publications Trust, W. Yorkshire, 1975.
4. S. M. Burkinshaw, “Chemical Principles of Synthetic Fibre Dyeing”, p.194, Blackie Academic & Professional, Glasgow, 1985.
5. R. Broadhurst in “The Dyeing of Synthetic-Polymer and Acetate Fibres”, (D. M. Nunn Ed.), p.136, Dyers Company Publications Trust, W. Yorkshire, 1979.