Matamet, Julio Alejandro Mamani, et al. “Geochemical Indices for Zn, Cu, and Co in Sediment Cores of Coata River, Puno Region, Peru ”. Geochimica Brasiliensis, vol. 38, Sept. 2024, p. e-24006, doi:10.21715/GB2358-2812.202438006.