Beukes, P., A. Babylon, W. Griffiths, S. Woodward, E. Kalaugher, A. Sood, and D. Chapman. “Modelling Perennial Ryegrass (Lolium Perenne) Persistence and Productivity for the Upper North Island under Current and Future Climate”. NZGA: Research and Practice Series, vol. 17, Sept. 2021, pp. 297-06, doi:10.33584/rps.17.2021.3450.