Matthew, C., and Sackville Hamilton. “Analysing Persistence of Grass Swards in Terms of Tiller Birth and Death”. NZGA: Research and Practice Series 15 (January 1, 2011): 63–68. Accessed August 24, 2026. https://www.nzgajournal.org.nz/index.php/rps/article/view/3225.