References
- Gjessing, E. T., 1970: Influence of ultra-violet radiation on aquatic humus. — Vatten 26:144–145.
- Gjessing, E. T. & Kallqvist, T., 1991: Algicidal and chemical effect of u.v.-radiation of water containing humic substances. — Wat. Res. 25: 491–494.
- GrØTerud, O., 1987: Lake acidification — a complex phenomenon elucidated by studies of fifteen lakes in Finnemarka, Southern Norway. — Norw. J. Agr. Sci., Suppl. 1, revised edition, 183 pp.
- Hedin, L. O., Likens, G. E., Poster, K. M. & Driscoll, C. T., 1990: A field experiment to test whether organic acids buffer acid deposition. — Nature 345: 798–800.
- Hemond, H. E, 1994: Role of organic acids in acidification of fresh waters. — In: STEINBERG, C. E. W. & WRIGHT, R. F. (eds.): Acidification of Freshwater Ecosystems. Implications for the Future: 103–115. John Wiley & Sons.
- Krug, E. C. & Frink, C. R., 1983: Acid rain on acid soil: A new perspective. — Science 221: 520–525.
- Mackereth, F. J. H., 1963: Water analysis for limnologists. — Freshwat. Biol. Ass. Sci. Pubis. 21: 1–70.
- Schindler, D. W., Frost, T. M., Mills, K. H., Chang, P. S. S., Davies, I. J., Findlay, L., Malley, D. F., Shearer, J. A., Turner, M. A., Garrison, P. J., Watras, C. J., Webster, K., Gunn, J. M., Brezonik, P. L. & Swenson, W. A., 1991: Comparisons between atmospherically-acidified lakes during stress and recovery. — Proc. Roy. Soc. Edinburgh 97: 193–226.
- Sft, 1991: Norwegian Monitoring Programme for Long-range Transported Air Pollution. — The Norwegian State Pollution Control Authority, Report 466, 320 pp. (in Norwegian, summary in English).
- Wright, F., 1989: Rain project: Role of organic acids in moderating pH change following reduction in acid deposition. — Water, Air and Soil Pollution 46: 251–259.