Judson, H. G., Fraser, P. M., Peterson, M. E., & Edwards, G. R. (2018). Specific genotypes of plantain (Plantago lanceolata) vary in their impact on sheep urine volume and nitrification in the urine patch. Journal of New Zealand Grasslands, 80, 125–128. https://doi.org/10.33584/jnzg.2018.80.335