RYAN, D.; COOPER, B. An evaluation of wild populations of perennial ryegrass from dairy farms in the Waikato and Bay of Plenty districts. NZGA: Research and Practice Series, [S. l.], v. 15, p. 169–172, 2011. DOI: 10.33584/rps.15.2011.3198. Disponível em: https://www.nzgajournal.org.nz/index.php/rps/article/view/3198. Acesso em: 19 apr. 2026.