Corbellini, M., Perenzin, M., Boggini, G., Bellocchi, G., Scudellari, D., & Monotti, M. (2006). Balance sheet method assessment for nitrogen fertilization in bread wheat: I. yield and quality. Italian Journal of Agronomy, 1(3), 331–342. https://doi.org/10.4081/ija.2006.331