@misc{indiciaee156bff6a77f,
  title = {Polarity histogram - a supplementary method for evoked potentials analysis.},
  author = {I Drews and D Piperova and P Ullsperger and H G Gille and M Pietschmann},
  year = {1981},
  url = {https://pubmed.ncbi.nlm.nih.gov/7345892/},
  note = {Source identifier: 7345892}
}