Lee, J., E. Thom, C. Waugh, N. Bell, M. Mcneill, D. Wilson, and D. Chapman. “Trajectory and Causes of Decline in the Botanical Composition of Dairy-Grazed Pasture in the Waikato”. Journal of New Zealand Grasslands, vol. 79, Jan. 2017, pp. 89-96, doi:10.33584/jnzg.2017.79.546.