1. Heavy metal contamination in surface sediments from the Gulf of Venice, Italy
2. International Programme for Chemical Safety (IPCS), Environmental Health Criteria 101: Methylmercury. World Health Organisation, Geneva (1990).
3. NATO ASI Seri;Wilken,1990
4. International Conference on Mercury as an Environmental Pollutant, Galve, Sweden (June 1990). Abstracts Coll. Papers 3:9, 3:28, 3:29 and 3:37.
5. Normalization of heavy metal data, Annex III in Report of the Working Group on Marine Sediments in Relation to Pollution. The International Council for the Exploration of the Sea, Copenhagen (March 1988).