1. Alcamo, J., Shaw, R. and Hordijk, L.: 1990,The RAINS model of Acidification Science and strategies in Europe, Kluwer Academic Publishers.
2. Mylona, S.: 1993, Trends of sulphur dioxide emissions, air concentrations and depositions of sulphur in Europe since 1880,Technical report, EMEP/MSC-W.
3. Sverdrup, H., Warfvinge, P., Blake, L. and Goulding, K.: 1995, Modelling recent and historic soil data from the Rothamsted experimental station, UK, using SAFE,Agriculture Ecosystems and Environment 53, 161?177.
4. Sverdrup, H., Warfvinge, P., Frogner, T., H��ya, A., Johansson, M. and Andersen, B.: 1992a, Critical loads for forest soils in the nordic countries,AMBIO XXI, 348?355.
5. Sverdrup, H., Warfvinge, P., Rabenhorts, M., Janicky, A., Morgan, R. and Bowman, M.: 1992b, Critical loads and steady-state chemistry for streams in the state of Maryland,Environmental Pollution 77, 195?203.