Soil Science - 1986 Traina, S. J., Sposito, G., Hesterberg, D., & Kafkafi, U. (1986). Effects of pH and organic acids on orthophosphate solubility in an acidic, montmorillonitic soil. Soil Science Society of America Journal, 50(1), 45–52. https://doi.org/10.2136/sssaj1986.03615995005000010009x Sposito, G., Levesque, C. S., & Hesterberg, D. (1986). Calcium-magnesium exchange on illite in the presence of adsorbed sodium. Soil Science Society of America Journal, 50(4), 905–909. https://doi.org/10.2136/sssaj1986.03615995005000040015x Traina, S. J., Sposito, G., Hesterberg, D., & Kafkafi, U. (1986). Effects of ionic strength, calcium, and citrate on orthophosphate solubility in an acidic, montmorillonitic soil. Soil Science Society of America Journal, 50(3), 623–627. https://doi.org/10.2136/sssaj1986.03615995005000030016x