Cooper, B., Hume, D., Panckhurst, K., Popay, A. and Lyons, T. 2006. The role of perennial ryegrass endophyte in Italian ryegrass. NZGA: Research and Practice Series. 12, (Jan. 2006), 107–114. DOI:https://doi.org/10.33584/rps.12.2006.3022.