@misc{indiciaeee4004228b89,
  title = {Improved myocardium transducer},
  author = {Culler, V. H. and Feldstein, C. and Lewis, G. W.},
  year = {1979},
  url = {https://ntrs.nasa.gov/citations/19780000372},
  note = {Source identifier: 19780000372}
}