1. Predicting tractor field performance;Zoz,1970
2. Tires and tracks in agriculture;Brixius,1976
3. The shape of the farm tractor;Reece,1970
4. Off-road traction prediction for wheeled vehicles;Wismer;J. Terramech.,1973
5. Tire selection and performance prediction for off-road wheeled vehicle operations;Turnage,1972