Morel C, Fardeau JC. 1990. Uptake of
phosphate from soils and fertilizers as affected
by soil P availability and solubility of
phosphorus fertilizers. Plant Soil 121:217-224.
Smaling EMA, Janssen BH. 1993. Calibration
of QUEFTS, a model predicting nutrient uptake
and yields from chemical soil fertility indices.
Geoderma 59:21-44.
Wolf J, de Wit CT, Janssen BH, Lathwell DJ.
1987. Modeling long-term crop response to
fertilizer phosphorus. I. The model. Agron. J.
79:445-451.