@misc{indiciae204c4c76bd4c,
  title = {Active magnetic shielding for biomagnetic measurement using spatial gradient fields.},
  author = {B Hilgenfeld and E Strähmel and H Nowak and J Haueisen},
  year = {2003},
  doi = {10.1088/0967-3334/24/3/303},
  url = {https://pubmed.ncbi.nlm.nih.gov/14509304/},
  note = {Source identifier: 14509304}
}