1. D. F. Ball, and I.D.P. Rodrigo . 1989 . Sri Lanka Collector Well Development Project: Final Report. Brit. Geol. Surv. Tech. Rept.WD/89/42.
2. Nomograms for the analysis of recovery tests on large-diameter wells
3. British Geological Survey/Overseas Development Administration . 1988 . Collector Well Project 1983-1988. Brit. Geol. Surv. Tech. Rept.WD/88/31.
4. C. B. Dissanayake, and S.V.R. Weerasooriya . 1985 . The Hydrogeochemical Atlas of Sri Lanka. The Natural Resources, Energy and Science Authority of Sri Lanka. ISBN 955-590-001-9.