@misc{indiciaefaebf2ce84cf,
  title = {[SOME CURRENT TECHNICAL PROBLEMS OF PHONOCARDIOGRAPHY].},
  author = {G I KASSIRSKII},
  year = {1965},
  url = {https://pubmed.ncbi.nlm.nih.gov/14291861/},
  note = {Source identifier: 14291861}
}