VIRKAJÄRVI, P., A. SAIRANEN, and J.I. NOUSIAINEN. “Sward and Milk Production Response to Early Turnout of Dairy Cows to Pasture in Finland”. Agricultural and Food Science 12, no. 1 (January 1, 2003): 21–34. Accessed August 19, 2022. https://journal.fi/afs/article/view/5740.