Owens, H., C. Finneseth, T. Tillery, and T. Phillips. “Germination Rate and Seedling Vigour of Tall Fescue As Affected by Endophyte Status and Seed Density”. NZGA: Research and Practice Series, vol. 13, Jan. 2007, pp. 271-4, doi:10.33584/rps.13.2006.3109.