@misc{indiciaeeecd420719d5,
  title = {Tissue harmonic imaging: why does it work?},
  author = {J D Thomas and D N Rubin},
  year = {1998},
  doi = {10.1016/s0894-7317(98)70055-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/9719092/},
  note = {Source identifier: 9719092}
}