1. W. Harms, in: Organofluorine Chemicals and Their Industrial Applications (R. E. Banks, ed.), Chapter 9, p. 188, Ellis Horwood, Chichester (1979).
2. E. Brunnschweiler and G. Siegrist, Textilveredlung 19, 305 (1984).
3. K. H. Schündehütte, in: Ulimann’s Encyklopaedie der technischen Chemie, 4th edn., Vol. 20, p. 113, Verlag Chemie, Weinheim (1981).
4. H. Zollinger, Melliand Textilber. 68, 644 (1988).
5. P. Rys and H. Zollinger, in: The Theory of Coloration of Textiles (C. L. Bird and W. S. Boston, eds.), p. 345, Dyers Company Publ. Trust, Bradford (1975).