1. Baes, CF. and R.D. Sharp, 1983. A proposal for estimation of soil leaching and leaching constant for use in assessment models. Journal of Environmental Quality 12(1): 17–28.
2. Bignoli, G. and L. Goetz, 1985a. Environmental impact of trace metals from disposed ash of coal-burning power plants. International Conference, Heavy Metals in the Environment, Athens, Greece, September 10–13, 1985.
3. Bignoli, G. and L. Goetz, 1985b. Long-term environmental impact of trace metals: chromium pathways from disposed coal fly ash to man. International Journal of Microbiology and Hygiene. Zbl. Bakt. Hyg., Abt. Orig., B 181: 442.
4. Bignoli, G. and L. Goetz, 1987. Environmental impact studies and health risk estimation of chromium released from stack and from disposed ash of a 2500 MWe coal burning power plant in comparison with other potential pollution sources. International Symposium on Environmental Pollution, Toronto, Ontario, June 11–12, 1987.
5. Bignoli, G., L. Goetz and E. Sabbioni, 1982. Implementation of a dynamic provisional approach to the study of heavy metal-environmental pollution. International Days of Biology: ways of survival, Naples, Italy.