1. The tractive performance of wheeled vehicles;Dwyer;Journal of Terramechanics,1984
2. Torque in agricultural tractor axles;Bashford;SAE Transactions,1987
3. Off-road traction prediction for wheeled vehicles;Wismer;Journal of Terramechanics,1973
4. A dimensional analysis of the performance of pneumatic tyres on soft soils;Freitag,1965
5. Glossary of terrain-vehicle terms—part II