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.; ten Berge, H. F. Long-Term Effects of Best Management Practices on Crop Yield and Nitrogen Surplus. Ital J Agronomy 2015, 10, 47-50.