@misc{indiciaef424bdcf147f,
  title = {Obstacle detection using ambient or self-generated noise.},
  author = {J P Wilson},
  year = {1966},
  doi = {10.1038/211218a0},
  url = {https://pubmed.ncbi.nlm.nih.gov/5965535/},
  note = {Source identifier: 5965535}
}