Hartikainen, Helinä, Päivi Ekholm, Vieno Piironen, Tailin Xue, Terhi Koivu, and Markku Yli-Halla. “Quality of the Ryegrass and Lettuce Yields As Affected by Selenium Fertilization”. Agricultural and Food Science 6, no. 5-6 (December 1, 1997): 381–387. Accessed November 23, 2024. https://journal.fi/afs/article/view/72801.