1. Empirical and theoretical models of phosphorus loading, retention and concentration vs. lake trophic state;Ahlgren;Hydrobiologia,1988
2. Scenario A1;BIOMOVS,1990
3. Optimization of lake hydrographic surveys;Håkanson;Water Resour. Res.,1978
4. Ecometric and Dynamic Modelling — Exemplified by Cesium in Lakes after Chernobyl;Håkanson,1991