@article{article051e538f,
title   = {Synthesis, characterization, and agronomic evaluation of iron phosphate impurities in superphosphates},
author = {Prochnow, Luís Ignácio and Chien, S. H. and Dillard, E. F. and Austin, E. R. and Carmona, G. and Henao, J. and Singh, U. and Taylor, R. W.},
year = {2003},
journal   = {Soil Science Society of America Journal}
}