Popay, A.J., and P.J. Gerard. “Cultivar and Endophyte Effects on a Root Aphid Aploneura Lentisci in Perennial Ryegrass”. New Zealand Plant Protection 60 (August 1, 2007): 223–227. Accessed August 29, 2026. https://journal.nzpps.org/index.php/nzpp/article/view/4624.