O. L. Tulp, F. Sainvil, R. Branly, A. Sciranka, R. Guibert, and G. P. Einstein, “Micronutrient Mineral and Nutrient Content of Volcanic Soils and Creeks from the Montserrat Soufriere Hills Volcano. Nature’s Fertilizer: Mineral Nutrient Content of Volcanic Soils”, EJAS, vol. 11, no. 2, pp. 143–156, Mar. 2023.