1. R.A. Livingston and N.S. Baer, Proc. 6th World Congress on Air Quality, International Union of Air Pollution Association, Paris, 16–20 May 1983, Preprint, pp. 8
2. “Dew” as a sink for sulphur dioxide
3. House of Commons, Acid Rain. 4th Report from the Environment Committee. HMSO, London, 1984, p. 76
4. United States Environmental Protection Agency, Acid Rain, Report EPA-600/9–79–036, Washington, 1980, p. 36
5. The pH of the atmospheric precipitation in Venice, related to both the dynamics of precipitation events and the weathering of monuments