@misc{indiciae6b9ba0d6ef15,
  title = {Ionic liquid-based aqueous two-phase system, a sample pretreatment procedure prior to high-performance liquid chromatography of opium alkaloids.},
  author = {Shehong Li and Chiyang He and Huwei Liu and Kean Li and Feng Liu},
  year = {2005},
  doi = {10.1016/j.jchromb.2005.08.005},
  url = {https://pubmed.ncbi.nlm.nih.gov/16143571/},
  note = {Source identifier: 16143571}
}