1. Aber, J. D., Botkin, D. B., and Melillo, J. M.: 1979,Can. J. For. Res. 9, 10.
2. Aber, J. D., Hendrey, G. R., Botkin, D. B., Francis, A. J., and Melillo, J. M.: 1980,Simulation of Acid Precipitation Effects on Soil Nitrogen and Productivity in Forest Ecosystems, Brookhaven Nat. Lab. Inf. Rept. BNL-28658.
3. Aber, J. D., Hendrey, G. R., Botkin, D. B., Francis, A. J. and Melillo, J. M.: 1981, ‘Potential Effects of Acid Precipitation on Soil Nitrogen and Productivity in Forest Ecosystems’, in D'Itri (ed.),Effects of Acid Precipitation on Ecological Systems in the Graet Lakes Region, Ann Arbor Science (in press).
4. Aber, J. D. and Melillo, J. M.: 1982, FORTNITE:A Computer Model of Organic Matter and Nitrogen Dynamics in Forest Ecosystems, Univ. of Wisconsin Res. Bull. (in press).
5. Abrahamsen, G.: 1980, ‘Impact of Atmospheric Sulphur Deposition on Forest Ecosystems’, in Shriner, Richmond, and Lindberg (eds.),Atmospheric Sulphur Deposition: Environmental Impacts and Health Effects, Ann Arbor Sci., Ann Arbor, MI, pp. 397–415.