1. Dyes and Their Intermediates, p. 72, Edward Arnold, London (1977).
2. in The Chemistry of Synthetic Dyes, Vol. III, ed. by pp. 249 et seq. Academic Press, New York (1970).
3. in The Chemistry of Synthetic Dyes, Vol. VI, ed. by pp. 211 et seq. Academic Press, New York (1972).
4. in Developments in Food Colours—1, ed. by pp. 47 et seq. Applied Science, London (1980).
5. and J. Chem. Res. (M) 2426 (1980).