1. The uses of radioactive isotopes in non-destructive testing;Cameron,1960
2. Non-Destructive Testing of Concrete;Jones,1962
3. A radioactive method for measuring variations in density in concrete cores, cubes and beams;Harland;Mag. Concr. Res.,1966
4. An improved technique for the measurement of density of concrete and soils with gamma radiation;Preiss,1964
5. Applications of gamma scattering to the measurement of bulk density;Semmler,1964