1. ASAE D497.6, June 2009, Agricultural Machinery Management Data;ASAE,2009
2. Development of a Tillage Energy Model Using a Simple Tool. CSBE/SCGAB 2006 Annual Conference, 2006;Ashrafi Zadeh,2006
3. Evaluating energy efficiency of site-specific tillage in maize in NE Italy;Bertocco;Bioresource Technology,2008
4. Energy Systems and Sustainability;Boyle,2003
5. CIGR Handbook of Agricultural Engineering. International Commission of Agricultural Engineering;CIGR,1999