1. Energy Recovery by Crops in Dependence on the Input of Mineral Fertilizer;Biermann,1999
2. Is agriculture using more and more energy? A French case study;Bonny;Agric. Syst.,1993
3. Effect of tillage system on energy and carbon balance in north-eastern Italy;Borin;Soil. Till. Res.,1997
4. Bugge, J., 2001. Note: rape seed oil for transport 1: energy balance and CO2 balance based on EMBIO, the Danish Energy Agency's model for economic and environmental assessment of biofuels. Folkecenter for Renewable Energy. Danish Center for Plant Oil Technology.
5. Energy balance of four farming systems in north-eastern Italy;Ceccon;Ital. J. Agron.,2003