1. E. J. Dixon, D. M. Groffman,Analyst 1975,100, 476.
2. R. J. Lindsay, Aromatic Amines, in:Comprehensive Organic Chemistry, Vol. 2 (I. O. Sutherland, ed.), Pergamon Press, Oxford, 1979, p. 131.
3. G. Carlucci, L. Airoldi, R. Fanelli,J. Chromatog. 1984,311, 141.
4. IARC,Monographs on the Evaluation of the Carcinogenic Risk of Chemicals to Humans, Vol. 28, International Agency for Research on Cancer, Lyon, 1982.
5. B. Sulaiman, W. A. Bashir,Analyst 1984,109, 1409.