1. Neutron probe practice;Bell;Institute of Hydrology, Wallingford, Rep. No. 19,1976
2. A model of transpiration and interception loss from a spruce forest in Plynlimon, central Wales;Calder;J. Hydrol.,1977
3. The theory of the neutron probe method;Calder,1979
4. Forest evaporation;Calder,1982
5. Influence of woodlands on water quantity;Calder,1985