TY  - RPRT
TI  - Head-column field-amplified sample stacking in binary system capillary electrophoresis. Preparation of extracts for determination of opioids in microliter amounts of body fluids.
AU  - A B Wey
AU  - C X Zhang
AU  - W Thormann
PY  - 1999
DO  - 10.1016/s0021-9673(99)00577-4
UR  - https://pubmed.ncbi.nlm.nih.gov/10486716/
ID  - 10486716
ER  -