@misc{indiciae253159c20d08,
  title = {Pacemaker current in frog atrium.},
  author = {H F Brown and A Clark and S J Noble},
  year = {1972},
  doi = {10.1038/newbio235030a0},
  url = {https://pubmed.ncbi.nlm.nih.gov/4537059/},
  note = {Source identifier: 4537059}
}