@misc{indiciaec58facff069c,
  title = {Post-column derivatization in high-performance liquid chromatography using the air segmentation principle: application to digitalis glycosides.},
  author = {J C Gfeller and G Frey and R W Frei},
  year = {1977},
  doi = {10.1016/s0021-9673(01)92044-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/914926/},
  note = {Source identifier: 914926}
}