Mantino, A., G. Ragaglini, N. Nassi o di Nasso, C. Tozzini, F. Taccini, and E. Bonari. “Alfalfa (Medicago Sativa L.) Overseeding on Mature Switchgrass (Panicum Virgatum L.) Stand: Biomass Yield and Nutritive Value After the Establishment Year”. Italian Journal of Agronomy, Vol. 11, no. 3, Aug. 2016, pp. 143-8, doi:10.4081/ija.2016.747.