Use of graphite polyurethane composite electrode for imipramine oxidation:: mechanism proposal and electroanalytical determination - Toledo, Renata Alves de; Santos, Mauro Coelho dos; Honório, Káthia Maria; Silva, Alberico Borges Ferreira da; Cavalheiro, Eder Tadeu Gomes; Mazo, Luiz Henrique (Analytical Letters, 2006)