@article{articlee878300e,
title   = {Development and validation of a disk solid phase extraction and gas chromatography-mass spectrometry method for MDMA, MDA, HMMA, HMA, MDEA, methamphetamine and amphetamine in sweat},
author = {De Martinis, Bruno Spinosa and Barnes, Allan J. and Scheidweiler, Karl B. and Huestis, Marilyn A.},
year = {2007},
doi = {10.1016/j.jchromb.2007.02.017},
journal   = {Journal of Chromatography B}
}