@misc{indiciaef4eda7078728,
  title = {An automatic bubble flow meter.},
  author = {H R ULFENDAHL and I VOGELER},
  doi = {10.1111/j.1748-1716.1962.tb02442.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/13923670/},
  note = {Source identifier: 13923670}
}