1. Organic acids and Fe deficiency: a review;Abadía;Plant Soil,2002
2. Nutritional control in hydroponics;Adams,2002
3. Proton and copper adsorption to maize and soybean root cell walls;Allan;Plant Physiol.,1989
4. Solubility and cation exchange in phosphate rock and ammonium and potassium-saturated clinoptilolite mixtures;Allen;Agron. J.,1993
5. Growth and nutrient uptake of wheat in clinoptilolite-phosphate rock substrates;Allen;Agron. J.,1995