Nathan O. Nelson Nelson, N. O., & Parsons, J. E. (2006). Modification and validation of GLEAMS for prediction of phosphorus leaching in waste-amended soils. Transactions of the ASABE, 49(5), 1395–1407. https://doi.org/10.13031/2013.22055 Nelson, N. O., & Mikkelsen, R. L. (2005). Balancing the phosphorus budget of a swine farm: A case study. Journal of Natural Resources and Life Sciences Education, 34, 90–95. Nelson, N. O., Mikkelsen, R. L., & Hesterberg, D. L. (2003). Struvite precipitation in anaerobic swine lagoon liquid: effect of pH and Mg : P ratio and determination of rate constant. BIORESOURCE TECHNOLOGY, 89(3), 229–236. https://doi.org/10.1016/S0960-8524(03)00076-2 Nelson, N. O., Mikkelsen, R. L., & Hesterberg, D. L. (2000). Struvite formation to remove phosphorus from anaerobic swine lagoon effluent. Animal, agriculture and food processing waste: 8th Symposium: American Society of Agriculture Engineers, 2000, (2000), 18–26. St. Joseph, Michigan: American Society of Agricultural Engineers.