TY  - RPRT
TI  - Solid-phase microextraction: a powerful sample preparation tool prior to mass spectrometric analysis.
AU  - György Vas
AU  - Károly Vékey
PY  - 2004
DO  - 10.1002/jms.606
UR  - https://pubmed.ncbi.nlm.nih.gov/15039931/
ID  - 15039931
ER  -