Watkins, N. and Selbie, D. (2015) Technical Description of OVERSEER for Regional Councils. Report prepared for Bay of Plenty Regional Council, September 2013. 40 pages. 

Wheeler, D.M. & Shepherd, M. (2013a). OVERSEER Technical Manual. Introductory chapter. 33 pages. Available on www.overseer.org.nz/technical-information

Selbie, D.R., Watkins, N.L., Wheeler, D.M., Shepherd, M.A., 2013. Understanding the distribution and fate of nitrogen and phosphorus in OVERSEER. Proceedings of the New Zealand Grassland Association 75, 113-118.

Shepherd, M., Wheeler, D., Selbie, D. & Freeman, M. (2013). OVERSEER: accuracy, precision, error and uncertainty. In: Accurate and efficient use of nutrients on farms. (Eds L.D. Currie and C L. Christensen). http://flrc.massey.ac.nz/publications.html. Occasional Report No. 26. Fertilizer and Lime Research Centre, Massey University, Palmerston North, New Zealand. 

Ledgard, S. F., & Waller J. E. (2001). Precision of estimates of nitrate leaching in OVERSEER. Client report to FertResearch. 19 pages. 

Shepherd, M. A., Wheeler, D. M., Freeman, M. F. & D. R. Selbie. (2015). Rationale for OVERSEER® Nutrient Budgets evaluation and recalibration. A client report submitted to OVERSEER Management Services, May 2015. 53 pages. 

Wheeler, D.M. & Shepherd, M. (2013b). OVERSEER: Answers to commonly asked questions. Client report to Ministry for Primary Industries. Available on: www.overseer.org.nz/whats-new