Bellocchi, G., M. Donatelli, M. Monotti, G. Carnevali, M. Corbellini, and D. Scudellari. “Balance Sheet Method Assessment for Nitrogen Fertilization in Winter Wheat: II. Alternative Strategies Using the CropSyst Simulation Model”. Italian Journal of Agronomy, vol. 1, no. 3, Sept. 2006, pp. 343-58, doi:10.4081/ija.2006.343.