1. The drawdown of the water-table under non-steady conditions near a pumped well in an unconfined formation;Boulton;Proc. Inst. Civil Eng.,1954
2. Boulton , N. S. Unsteady radial flow to a pumped well allowing for delayed yield from storage, General Assembly of Rome, Tome 2, Groundwater, Publ 37 Int. Ass. Sci. Hydrol. Washington, D. C. 1954
3. Analysis of data from nonequilibrium pumping tests allowing for delayed yield from storage;Boulton;Proc. Inst. Civil Eng.,1963
4. Analysis of data from pumping tests in unconfined anisotropic aquifers;Boulton;J. Hydrol.,1970
5. An extended theory of delayed yield from storage applied to pumping tests in unconfined anisotropic aquifers;Boulton;J. Hydrol.,1971