2000 journal article
Estimating buffer coefficients for the phosphorus decision support system: Preliminary comparisons among field and laboratory estimates from three Asian upland soils
Communications in Soil Science and Plant Analysis, 31(11-14), 2101–2110.
1997 journal article
Rhythmic movement of leaves in soybean plants grown under Zn toxicity at different doses of Fe and S
Revista Brasileira De Fisiologia Vegetal, 9(2), 131–134.
Current research on organic phosphorus
In Soil water efficiency of sorghum and cowpea as affected by nutrient input and tillage (p. 141). Raleigh, NC : Soil Management Collaborative Research Support Program, North Carolina State University.
1991 journal article
Interpretive summary of Part 1: factors affecting the availability of phosphorus in soils of the semi-arid tropics
Phosphorous Nutrition of Grain Legumes in the Semi-Arid Tropics, 43.
Micronutrient soil tests
In Micronutrients in agriculture: proceedings of a symposium held at Muscle Shoals, Alabama, April 20-22, 1971 (p. 289). Madison: Soil Science Society of America.