Vaghetti, J. C. P., J. de L. Brasil, T. M. H. Costa, Éder C. Lima, and E. V. Benvenutti. “Influence of the Synthesis Conditions on the Characteristics and Metal Adsorption Properties of the 3-(1,4-phenylenediamine)propylsilica Xerogel”. Eclética Química, vol. 30, no. 4, Dec. 2005, pp. 43-49, doi:10.26850/1678-4618eqj.v30.4.2005.p43-49.