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2. Cereal harvesting—a mathematical model;Philips;J. agric. Engng Res.,1974
3. The benefits of different speed control systems for combine harvesters;McGechan;J. agric. Engng Res.,1982
4. Measurement of parameters for automatic control of grain combine forward speed according to acoustic sensor indications;Palmer,1977
5. An experimental system for the automatic control of combine grain loss;Moore,1978