TY  - RPRT
TI  - Capillary-based solid-phase extraction with columns prepared using different bead trapping methods.
AU  - Ruixi Xie
AU  - Richard Oleschuk
PY  - 2005
DO  - 10.1002/elps.200500215
UR  - https://pubmed.ncbi.nlm.nih.gov/16200527/
ID  - 16200527
ER  -