1. Exner O (1978) A critical compilation of substituent constants. In: Chapman NB, Shorter J (eds) Correlation analysis in chemistry. Plenum Press, New York London, pp 455?481
2. De Smet MJ, Kingma J, Witholt B (1978) Biochim Biophys Acta 506:64?68
3. Felix HR (1978) SKMB Certificate thesis (unpublished). Ciba-Geigy AG, Basel
4. Gingell R, Walker R (1971) Xenobiotica 1:231?239
5. Kulla HG (1981) Aerobic bacterial degradation of azo dyes. In: Leisinger T, Cook AM, H�tter R, N�esch J (eds), Microbial Degradation of Xenobiotics and Recalcitrant Compounds. Academic Press, London, pp 387?399