1. Optimum travel speed for maximum ploughing acreage;Schlegel;Transactions of the American Society of Agricultural Engineers,1969
2. Field performance of tractor draught control systems;Cowell;Journal of Agricultural Engineering Research,1967
3. Factors affecting the dynamic behaviour of higher speed agricultural vehicles;Crolla;Journal of Agricultural Engineering Research,1984
4. The response of tractor draught controls to random inputs;Crolla;Journal of Agricultural Engineering Research,1975
5. Automatic forward speed control of hydrostatic transmission tractors;Ryan;Journal of Agricultural Engineering Research,1972