@misc{indiciaed499b35359e1,
  title = {I have been using electrospray ionization-mass spectromatory in my chromatography methods development laboratory for about 8 years by itself and in combination with high-performance liquid chromatography. I have noticed significant differences in the spectra obtained on or compared to past results. Could you make a few comments concerning these observations?},
  year = {2004},
  url = {https://pubmed.ncbi.nlm.nih.gov/15693194/},
  note = {Source identifier: 15693194}
}