Babylon, A., S. Woodward, and P. Beukes. “Summer Growth Rates and Annual Yields of Perennial Ryegrass (Lolium Perenne L.) in the Upper North Island Are Expected to Decline As a Result of Climate Change”. Journal of New Zealand Grasslands, vol. 84, May 2023, pp. 31-40, doi:10.33584/jnzg.2022.84.3565.