TY - JOUR AU - Namjoo, Moslem AU - Nankali, Naser TI - Stress Analysis of Tractor Tire Interaction whit Soft Soil using Non-linear 2D Finite Element Method JO - International Journal of Advanced Design and Manufacturing Technology VL - 5 IS - 3 SP - 0 EP - 0 PY - 2012 DO - ER -