1. Traditional and improved methods of low cost housing in the Sudan;Little;International Journal for Development Technology,1983
2. Stabilised soil blocks for low cost housing in the Sudan;Adam,1982
3. Guarded Hot Box method;British Standards Institution;BSI 874, Part 3, Section 3.1,1987
4. Analytical determination of soil thermal conductivity and diffusivity;Ingersolls;Journal of Solar Energy Engineering,1988