de Villiers, M., Dukiewicz, R. 1994. Development of a Draft Manufacturing and Mining Energy Effectiveness Strategy for South Africa.The potential benefits of improved energy effectiveness in Manufacturing and mining in South Africa (Part 2 of 3). University of Cape Town.

de Villiers, M. G., & Dukiewicz, R. K. (1994). Development of a Draft Manufacturing and Mining Energy Effectiveness Strategy for South Africa.The potential benefits of improved energy effectiveness in Manufacturing and mining in South Africa (Part 2 of 3) University of Cape Town ,Faculty of Engineering & the Built Environment ,Energy Research Institute. Retrieved from http://hdl.handle.net/11427/23861

de Villiers, M G, and R K Dukiewicz Development of a Draft Manufacturing and Mining Energy Effectiveness Strategy for South Africa.The potential benefits of improved energy effectiveness in Manufacturing and mining in South Africa (Part 2 of 3). University of Cape Town ,Faculty of Engineering & the Built Environment ,Energy Research Institute, 1994. http://hdl.handle.net/11427/23861

de Villiers MG, Dukiewicz RK. Development of a Draft Manufacturing and Mining Energy Effectiveness Strategy for South Africa.The potential benefits of improved energy effectiveness in Manufacturing and mining in South Africa (Part 2 of 3). 1994 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/23861