Zavattaro, L., Costamagna, C., Grignani, C., Bechini, L., Spiegel, A., Lehtinen, T., Guzmán, G., Krüger, J., D’Hose, T., Pecio, A., van Evert, F. K. and ten Berge, H. F. (2015) “Long-term effects of best management practices on crop yield and nitrogen surplus”, Italian Journal of Agronomy, 10(1), pp. 47–50. doi: 10.4081/ija.2015.643.