1. Evaluating the vibration stress with drivers of farm tractors and machinery under practical conditions;Dupuis;Landtech. Forsch.,1964
2. Effect of tractor operation on human stress;Dupuis;Agric. Engng, St. Joseph, Mich.,1959
3. Effect of tractor operation on human stress;Dupuis;Agric. Engng, St. Joseph, Mich.,1959
4. Human tolerance to vibration in farm machines;Haack;Agric. Engng,1956
5. Effects of tractor vibration on operators;Hornick;Agric. Engng,1961