Armstrong, M.L., K.C. Harrington, and S.S. Seefeldt. “Weed Establishment in the Second Year After High Pasture Sowing Rates”. New Zealand Plant Protection 55 (August 1, 2002): 116–120. Accessed April 20, 2024. https://journal.nzpps.org/index.php/nzpp/article/view/3930.