1. Church, D. 1976. Thermal infra-red linescanning and its possible use in engineering geology, Report No 41, Johannesburg Consolidated Investment Co. Ltd (Fundamental Research Department).
2. Church, D., Viljoen, R. P. & Feuchtwanger, T. 1975. Some image enhancement techniques applied to thermal infrared imagery, Report No 25, Johannesburg Consolidated Investment Co. Ltd (Fundamental Research Department).
3. Construction and interpretation of a digital thermal inertia image,;Photogramm. Engng Remote Sensing,,1979
4. Digital processing of analog thermal infra-red scanner data,;Photogramm. Engng Remote Sensing,,1979
5. Use of thermal linescanning imagery for engineering geological investigations in dolomite terrain,;AEG Newsletter,1978