1. Adema, E.H.: 1979, Ozone interference in the determination of nitrogen dioxide by a modified manual Salzman-method. Analyt. Chem. 51, 1002–1006.
2. Adema, E.H., Heeres, P., and Hulskotte, J.: 1986, On the dry deposition of NH3, SO2 and NO2 on wet surfaces in a small scale windtunnel, in Hartmann, H.F. (ed.), Proceedings of the 7th World Clean Air Congress 1–8, Sydney.
3. Adriaanse, A.: 1990, Milieukerngegevens Nederland. Ministry of Housing, Physical Planning and Environment, The Netherlands.
4. Asman, W.A.H., and Diederen, H.S.M.A. (eds.): 1987, Ammonia and Acidification., Proceedings EURASAP-Conference, Bilthoven, The Netherlands.
5. Breemen, N. van., Burrough, P.A., Velthorst, E.J., Dobben, H.F. van, Wit, T. de, Ridder, T.B., and Reijnders, H.F.R.: 1982, Soil acidification from atmospheric ammonium sulphate in forest canopy throughfall. Nature 299, 548–550.