Yule, I., R. Pullanagari, M. Irwin, P. Mcveagh, G. Kereszturi, M. White, and M. Manning. 2015. “Mapping Nutrient Concentration in Pasture Using Hyperspectral Imaging”. Journal of New Zealand Grasslands 77 (January):47-50. https://doi.org/10.33584/jnzg.2015.77.482.