TY  - RPRT
TI  - Solid-phase extraction: method development, sorbents, and coupling with liquid chromatography.
AU  - M C Hennion
PY  - 1999
DO  - 10.1016/s0021-9673(99)00832-8
UR  - https://pubmed.ncbi.nlm.nih.gov/10526783/
ID  - 10526783
ER  -