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The development and validation of a multiclass liquid chromatography tandem mass spectrometry (LC–MS/MS) procedure for the determination of veterinary drug residues in animal tissue using a QuEChERS (QUick, Easy, CHeap, Effective, Rugged and Safe) approach
George Stubbings, Timothy Bigwood
Analytica Chimica Acta
Volume 637, Issues 1-2, 1 April 2009, Pages 68-78
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http://dx.doi.org/10.1016/j.aca.2009.01.029 
