@misc{indiciae0515801f3fbf,
  title = {Cardiac imaging using a phased array ultrasound system. I. System design.},
  author = {O T vonRamm and F L Thurstone},
  year = {1976},
  doi = {10.1161/01.cir.53.2.258},
  url = {https://pubmed.ncbi.nlm.nih.gov/1245033/},
  note = {Source identifier: 1245033}
}