@article{article320cb54b,
title   = {Investigation of preconcentration strategies for the trace analysis of multi-residue pesticides in real samples by capillary electrophoresis},
author = {Silva, Clóvis Lúcio da and Lima, Elizabete Campos de and Tavares, Marina Franco Maggi},
year = {2003},
doi = {10.1016/s0021-9673(03)00711-8},
journal   = {Journal of Chromatography A}
}