1. V.L.S. Bhimasankaram, 1975 . The role of geophysics in selection of sites in hard rock area. Proceedings of seminar organized by UNICEF-Hyderabad.
2. V. K. Dixit, 1972 . Evaluation of ground-water potential in hard rock areas. Proceedings of the seminar on "Problems in Ground-Water Development," Madras.
3. B. P. Radhakrishna, 1970 . Problems confronting occurrence of ground water in hard rocks. Proceedings of the seminar on "Ground-Water Potential in Hard Rock Areas of India," Bangalore.
4. D. R. Stevenson, and A. Achuta Rao . 1975 . Hydrogeology of 56G (east) and 56K (west). Canadian assisted ground-water project. C.G.W.B. Technical Report-Hyderabad.