1. Allison , G. B. M. W. Hughes Environmental tritium in the unsaturated zone: Estimation of recharge to an unconfined aquifer International Symposium on Isotope Techniques in Groundwater Hydrology, Vienna 57 69 Vienna 1974
2. The distribution of deuterium and oxygen-18 in dry soils, II, Experimental;Allison;J. Hydrol.,1983
3. Allison , G. B. C. J. Barnes M. W. Hughes Towards understanding of stabile isotope profiles in field soils 1984
4. Andersen , L. J. T. Sevel 6 years environmental tritium profiles in the unsaturated and saturated zones, Grønhøj, Denmark International Symposium on Isotope Techniques in Groundwater Hydrology, Vienna 3 18 Vienna 1974
5. Barnes , C. J. G. B. Allison Interpretation of stable isotopes profiles in arid zone soils 1982