1. Draught animal power-some recent and current work;Kemp;World Animal Review,1987
2. Ramaswamy, N. S. Draught animal power in the Third World. In “An Introduction to Working Animals” ed J. L. Falvey, MPW Australia, 1–7
3. The harnessing of draught animals;Barwell,1982
4. An instrumentation system to measure the performance of draught animals at work;O'Neill,1987
5. Factors affecting the measurements of draught force, work output and power of oxen;Lawrence;Journal of Agricultural Science, Cambridge,1985