1. PEMU - An impact based environmental protection decision support system;Sydow;Syst. Anal. & Sim,1988
2. The PEMU forest impact model FORSTK - A pine standand wood supply model;Bellmann;Syst. Anal. & Sim,1988
3. PEMU/Air pollutant model based on emitter-receptor transmission calcullations;Lasch;Syst. Anal. & Sim,1988