Virkajärvi, Perttu, and Kaisa Matilainen. “Predicting Herbage Mass of Phleum Pratense L. Pastures With a Disk Meter”. Agricultural and Food Science 4, no. 4 (December 1, 1995): 397–405. Accessed July 16, 2024. https://journal.fi/afs/article/view/72617.