P. Noblecilla R., J. Rimaycuna R., D. Saldarriaga Y., J. Solis V., and G. J. F. Cruz C., “Removal of lead (Pb) in water samples from the Tumbes river using an adsorbent material based on ignimbrite”, Manglar, vol. 21, no. 3, pp. 313–320, Aug. 2024, doi: 10.57188/manglar.2024.034.