1. ‘Tractor performance spreadsheet for radial tires’;Al-hamed;Computers and Electronics in Agriculture,1994
2. ‘A program for predicting tractor performance in Visual C++’;Al-hamed;Computers and Electronics in Agriculture,2001
3. Virtual Prototyping software MSC. ADAMS application;Fan,2006
4. ‘A traction prediction software for agricultural tractors’;Heliodore;Computers and electronics in agriculture,2007
5. ‘A preliminary investigation of a combined slip and draught control for tractors’;Ismail;Journal of Agricultural Engineering Research,1981