Council of Scientific and Industrial Research (1969) Improvements in or relating to preparation of sintered photo conductive cadmium sulphide cells. 115347.

Council of Scientific and Industrial Research (1969) Improvements in or relating to impregnation of braided linen threads with conducting carbon. 112577.

Council of Scientific and Industrial Research (1969) Improvements in or relating to process of making photosensitive silver sulphide thin film device. 111275.

Counsil of Scientific and Industrial Research (1969) Improvements in or relating to photosensitive thin films of thallium selenide layers. 111247.

Council of Scientific and Industrial Research (1969) Improvements in or relating to chemical preparation of silver selenide powder. 112125.

Council of Scientific and Industrial Research (1968) Improvements in or relating to deposition of photosensitive films of silver sulphide layers. 109883.

Council of Scientific and Industrial Research (1968) Improvements in or relating to deposition of photosensitive thin films of thallium sulphide layers. 110856.