1. Strain gauge cell measures soil pressure;Cooper;Agric. Engng.,1975
2. Effect of two wheel and tandem drives on traction and soil compaction stresses;Reed;Trans. ASAE,1959
3. Soil pressure distribution under tractor and implement traffic;Vanden Berg;Agric. Engng.,1957
4. Draft, power, efficiency and soil compaction characteristics of single, dual and low pressure tyres;McLeod;Trans. ASAE,1966
5. Niektoré Poznatky Ziskane Meranim Napätia Pôdy Pod Traxtorovymi Kolesami;Christov;Acta Tech. Ag. IV Univ. Mitra. Czech.,1969