Maxwell, T., G. Edwards, K. Tozer, and G. Cosgrove. “Persistence of Perennial Ryegrass, Tall Fescue and Cocksfoot Following Annual Sowings: Influence of Grass Species, Ryegrass Cultivar and Pasture Age on Yield, Composition and Density”. NZGA: Research and Practice Series, vol. 17, Dec. 2021, pp. 285-96, doi:10.33584/rps.17.2021.3466.