Ferreira, B., L. O. Duarte, Érica N. Oiye, M. F. M. Ribeiro, J. M. T. Katayama, P. H. B. Oliva, and M. F. de Oliveira. “A Simple and Fast Method to Detect Freebase Cocaine in Artificial Saliva by Square Wave Voltammetry (SWV) Using Carbon Paste Electrode”. Journal of Electrochemical Science and Engineering, vol. 10, no. 4, July 2020, pp. 361-7, doi:10.5599/jese.849.