@misc{indiciae638a735894f7,
  title = {Steady state spherically focused, circular aperture beam patterns.},
  author = {Albert Goldstein},
  year = {2006},
  doi = {10.1016/j.ultrasmedbio.2006.06.013},
  url = {https://pubmed.ncbi.nlm.nih.gov/17045863/},
  note = {Source identifier: 17045863}
}