1. Eartharchitecture.org. Earth Architecture. Available at online: http://www.eartharchitecture.org/ [accessed 13 November 2008]; 2008.
2. Building Research Institute of the University of Kassel. Facts. Available at online: http://www.asl.uni-kassel.de/∼feb/index.html [accessed 13 November 2008]; 2008.
3. Mortenson N. The naturally air conditioned house. Available at online: http://www.dab.uts.edu.au/ebrf/research/air_conditioned.html [accessed 13 November 2008]; 2000.
4. Evaluating rammed earth walls: a case study;Taylor;Solar Energy,2004
5. Compressive strength characteristics of cement stabilized rammed earth walls;Jayasinghe;Construction and Building Materials,2007