1. Druckverteilung im Boden und Bodenverformung unter Schlepperreifen;Söhne;Grundl. Landtechn,1953
2. Stress distribution in soils under tractor loads;Reaves;Agric. Engng,1960
3. Strain gage cell measures soil pressure;Cooper;Agric. Engng,1957
4. Measurement of soil tire interface pressures;Trabbic;Agric. Engng,1959
5. Pressure distribution between a smooth tire and the soil;Vanden Berg;Trans. ASAE,1962