1. Roberts, D.W., and S.J. Marshall in the Proceedings of 6th International Workshop on Quantitative Structure-Activity Relationship (QSAR) in Environmental Science, Overseas Publisher Association (OPA), Belgirate, Italy, 1994.
2. Roberts, D.W., QSAR in Environmental Toxicology—IV, Proceedings of the 4th International Workshop, Elsevier Science Publisher, Veldhoven, The Netherlands, 1990.
3. Wong, D.C.L., P.B. Dorn, and E.Y. Chai, Acute Toxicity and Structure-Activity Relationships of Nine Alcohol Ethoxylate Surfactants to Fathead Minnow and Daphnia magna, Environ. Toxicol. Chem. 16:1970 (1997).
4. Sjöström, M., Å. Lindgren, and L.-L. Uppgård, Quantitative Structure-Activity Relationships in Environmental Sciences—VII, SETAC Press, Pensacola, 1998, pp. 435–449.
5. Lindgren, Å., and M. Sjöström, Multivariate Physicochemical Characterisation of Some Technical Nonionic Surfactants, Chemomet. Intell. Lab. Systems 23:179 (1994).