@article{article69cb80c1,
title   = {Determination of steroids, caffeine and methylparaben in water using solid phase microextraction-comprehensive two dimensional gas chromatography–time of flight mass spectrometry},
author = {Gomes, Paulo Calirmont Feitosa de Lima and Barnes, Brian B and Santos Neto, Alvaro Jose dos and Lanças, Fernando Mauro and Snow, Nicholas H},
year = {2013},
doi = {10.1016/j.chroma.2013.05.023},
journal   = {Journal of Chromatography A}
}