@misc{indiciaee8a0ce12282a,
  title = {A planar second-order DC SQUID gradiometer.},
  author = {P Carelli and L Chiaventi and R Leoni and M Pullano and G Schirripa Spagnolo},
  year = {1991},
  doi = {10.1088/0143-0815/12/b/002},
  url = {https://pubmed.ncbi.nlm.nih.gov/1807874/},
  note = {Source identifier: 1807874}
}