1. Rock Grouting with Emphasis on Dam Sites;Ewert,1985
2. Permeability, groutability and grouting of rocks related to dam sites, Part 2;Ewert;Dam Engineering,1997
3. Critic permeability. New critieria for the measurement of permeability on large dams foundations;Foyo,1990
4. Permeability tests for rock masses. A proposal for a new expression for the equivalent Lugeon unit (ELU);Foyo;Dam Engineering,2002
5. Significance of water pumping test in detecting subsurface weak features with reference to projects of Eastern India;Gangopadhyay,1981