@article{articlecf044e95,
title   = {Characterization and greenhouse evaluation of brazilian calcined nonapatite phosphate rocks for rice},
author = {Francisco, E. A. B. and Chien, S. H. and Prochnow, Luís Ignácio and Austin, E. R. and Toledo, Maria Cristina Motta de and Taylor, R. W.},
year = {2008},
journal   = {Agronomy Journal}
}