Watson, R.H., R.G. Keogh, and M.F. Mcdonald. “Ewe Reproductive Performance and Growth Rate of Suckling-Lambs on Endophyte-Infected Perennial Ryegrass Pasture”. NZGA: Research and Practice Series 7 (January 1, 1999): 19–26. Accessed October 5, 2026. https://www.nzgajournal.org.nz/index.php/rps/article/view/3402.