@inbook{inbook580cac2d,
title   = {Phosphate fertilizers with varying water-solubilities applied to amazonian soils. I. Agronomic efficiency of P sources},
author = {Brasil, Edson Carvalho and Muraoka, Takashi and Boaretto, Antonio Enedi and Scivittaro, Walkyria Bueno},
year = {2002},
publisher = {IAEA},
journal   = {Assessment of soil phosphorus status and management of phosphatic fertilisers to optimise crop production}
}