Pecetti, L., and L. Borrelli. “Wheat Yield As a Measure of the Residual Fertility After 20 Years of Forage Cropping Systems With Different Manure Management in Northern Italy”. Italian Journal of Agronomy, Vol. 14, no. 3, July 2019, pp. 142-6, doi:10.4081/ija.2019.1359.