Rowarth, A.Milet J.S., and F.G. Scrimgeour. “Potential for Anaerobic Digestion of Dairy Farm Effluent in New Zealand”. Journal of New Zealand Grasslands 77 (January 1, 2015): 71–76. Accessed May 15, 2026. https://www.nzgajournal.org.nz/index.php/JoNZG/article/view/486.