Čop, Jure, Klemen Eler, Primož Kopač, and Jože Verbič. “Morphological Development, Herbage Yield and Quality of Italian Ryegrass During Primary Growth and Regrowth: Regression Models and Yield Optimisation”. Italian Journal of Agronomy 14, no. 4 (November 28, 2019): 240-247. Accessed April 3, 2020. https://agronomy.it/index.php/agro/article/view/1497.