Harrington, K.C., D.J. Horne, and P.D. Kemp. “Can Differences in <i>Cirsium arvense</i> and <i>Rumex obtusifolius</i> Densities Within Pastures Be Explained by Soil Parameters”. New Zealand Plant Protection 67 (January 8, 2014): 238–244. Accessed October 3, 2023. https://journal.nzpps.org/index.php/nzpp/article/view/5786.