Oscarson, DW., Huang, PM., Defosse, C., & Herbillon, A. (1981). Oxidative Power of Mn(iv) and Fe(iii) Oxides With Respect To As(iii) in Terrestrial and Aquatic Environments. Nature : international weekly journal of science, 291(5810), 50-51. https://doi.org/10.1038/291050a0 (Original work published 1981)