1. Boulton , N. S. Unsteady radial flow to a pumped well allowing for delayed yield from storage Int. Ass. Sci. Hydrol. Rome Publ. 2 472 1954
2. Analysis of data from nonequilibrium pumping tests allowing for delayed yield from storage;Boulton;Proc. Inst. Civil Eng.,1963
3. Analysis of data from pumping tests in unconfined anisotropic aquifers;Boulton;J. Hydrol.,1970
4. An extended theory of delayed yield from storage applied to pumping tests in unconfined anisotropic aquifers;Boulton;J. Hydrol.,1971
5. Computer analysis of free surface well flow;Brutsaert;J. Irrig. Drain. Div. Amer. Soc. Civil Eng.,1971