HUHTANEN, P., S. AHVENJÄRVI, and T. HEIKKILÄ. “Effects of Sodium Sulphate and Potassium Chloride Fertilizers on the Nutritive Value of Timothy Grown on Different Soils”. Agricultural and Food Science 9, no. 2 (January 2, 2000): 105–120. Accessed April 20, 2024. https://journal.fi/afs/article/view/5653.