Almeida, F. N. and H. H. Stein. 2010. Performance and phosphorus balance of pigs fed diets formulated on the basis of values for standardized total tract digestibility of phosphorus. J. Anim Sci. 88:2968-2977. Link to full text (.pdf)
Petersen, G. I., and H. H. Stein. 2004. A novel procedure for measuring endogenous phosphorus losses and true phosphorus digestibility by growing pigs. J. Anim. Sci. 82(Suppl. 1):254 (Abstr.) Link to abstract (.pdf)