April Beth Leytem Leytem, A. B., Kwanyuen, P., Plumstead, P. W., Maguire, R. O., & Brake, J. (2008). Evaluation of phosphorus characterization in broiler ileal digesta, manure, and litter samples: P-31-NMR vs. HPLC. JOURNAL OF ENVIRONMENTAL QUALITY, 37(2), 494–500. https://doi.org/10.2134/jeq2007.0134 Plumstead, P. W., Leytem, A. B., Maguire, R. O., Spears, J. W., Kwanyuen, P., & Brake, J. (2008). Interaction of calcium and phytate in broiler diets. 1. Effects on apparent prececal digestibility and retention of phosphorus. POULTRY SCIENCE, 87(3), 449–458. https://doi.org/10.3382/ps.2007-00231 Leytem, A. B., Plumstead, P. W., Maguire, R. O., Kwanyuen, P., Burton, J. W., & Brake, J. (2008). Interaction of calcium and phytate in broiler diets. 2. Effects on total and soluble phosphorus excretion. POULTRY SCIENCE, 87(3), 459–467. https://doi.org/10.3382/ps.2007-00229 Leytem, A. B., Plumstead, P. W., Maguire, R. O., Kwanyuen, P., & Brake, J. (2007). What aspect of dietary modification in broilers controls litter water-soluble phosphorus: Dietary phosphorus, phytase, or calcium? JOURNAL OF ENVIRONMENTAL QUALITY, 36(2), 453–463. https://doi.org/10.2134/jeq2006.0334 Leytem, A. B., & Mikkelsen, R. L. (2003). Separation of soil organic phosphorus compounds using reverse-phase ion-pair chromatography. COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS, 34(9-10), 1393–1406. https://doi.org/10.1081/CSS-120020452 Leytem, A. B., Mikkelsen, R. L., & Gilliam, J. W. (2002). Sorption of organic phosphorus compounds in Atlantic coastal plain soils. Soil Science, 167(10), 652–658. https://doi.org/10.1097/01.ss0000034854.98442.39