Electrochemical behavior of sildenafil citrate at gold and cystein modified gold electrode in acid solution. Journal of Electrochemical Science and Engineering, [S. l.], v. 8, n. 2, p. 163–170, 2018. DOI: 10.5599/jese.481. Disponível em: https://pub.iapchem.org/ojs/index.php/JESE/article/view/481. Acesso em: 2 jun. 2026.