1. Sulfatkällor för ytvatten i norra Sverige;Andersson,1999
2. Försurning och kalkning av svenska vatten;Bernes,1991
3. Surface water acidification, episodes of natural acidity and liming in Västerbotten;Bishop,1995
4. Liming of acid surface waters in northern Sweden: Questions of geographical variation and the precautionary principle;Bishop;Trans. Inst. Brit. Geog.,1997
5. Separating the natural and anthropogenic components of spring flood pH decline: a method for areas that are not chronically acidified;Bishop;Water Resour. Res.,2000