1. Matrix Calculus;Bodewig,1959
2. The reciprocity principle in flow through heterogeneous porous media;Bruggeman,1972
3. Over grondwaterstroomingen bij wateronttrekking door middel van putten;DeGlee,1930
4. Eigenheiten von geschichteten hydrogeologischen Systemem;Halász;Hidrol. Közl.,1975
5. Computation of drawdown in wells in stratified aquifer systems;Halász,1979