@article{articleca05cee5,
title   = {Electrochemical oxidation of biological molecules at carbon paste electrodes pre-treated in guanine solutions},
author = {Silva, Robson Pinho da and Serrano, Silvia Helena Pires},
year = {2003},
doi = {10.1016/s0731-7085(03)00296-6},
journal   = {Journal of Pharmaceutical and Biomedical Analysis}
}