1. Hydraulics of Groundwater;Bear,1979
2. Praktical Optimization;Gill,1981
3. Finite element computations of horizontal groundwater flow with moving boundaries;Herrling,1982
4. Finite element computation of unsaturated and saturated groundwater flow in stratified aquifers;Herrling,1984
5. Parameteridentifizierung bei Numerischen Grundwasserströmungs Modellen;Odenwald,1994