Liquid chromatography – tandem mass spectrometry method for the determination of ten tetracycline residues in muscle samples
Gajda, Anna, Posyniak, Andrzej
Determination of steroid esters in hair of slaughter animals by liquid chromatography with tandem mass spectrometry
Matraszek-Żuchowska, Iwona, Woźniak, Barbara, Sielska, Katarzyna, Posyniak, Andrzej