@misc{indiciae7f68a10d2c4f,
  title = {[On testing ball valves for sticking].},
  author = {N B Doborva and B P Zverev and M B Il'ina and N B Kuz'mina and A Iu Perimov},
  url = {https://pubmed.ncbi.nlm.nih.gov/5617817/},
  note = {Source identifier: 5617817}
}