TY - JOUR T1 - Electrochemical biosensors in pharmaceutical analysis JO - Brazilian Journal of Pharmaceutical Sciences A1 - Gil, Eric de Souza A1 - Melo, Giselle Rodrigues de SN - 1984-8250 UL - 10.1590/S1984-82502010000300002 VL - 46 Y1 - 2010 PB - Brazil ER -