@article{article908fec38,
title   = {Determination of cocaine, benzoylecgonine and cocaethylene in human hair by solid-phase microextraction and gas chromatography-mass spectrometry},
author = {Toledo, Fernanda Crossi Pereira de and Yonamine, Maurício and Moreau, Regina Lúcia de Moraes and Silva, Ovandir Alves},
year = {2003},
doi = {10.1016/j.jchromb.2003.10.008},
journal   = {Journal of Chromatography B}
}