@misc{indiciaef34b886fe013,
  title = {Is it positive or negative? on determining ERP components.},
  author = {Peter beim Graben and Stefan Frisch},
  year = {2004},
  doi = {10.1109/tbme.2004.827558},
  url = {https://pubmed.ncbi.nlm.nih.gov/15311822/},
  note = {Source identifier: 15311822}
}