Gomes, C. S. F., R. Hernandez, M. C. Sequeira, and J. B. P. Silva. 2012. “CHARACTERIZATION OF CLAYS USED FOR MEDICINAL PURPOSES IN THE ARCHIPELAGO OF CAPE VERDE”. Geochimica Brasiliensis 23 (3). https://geobrasiliensis.org.br/geobrasiliensis/article/view/313.