@misc{indiciae742c9bcd4cd1,
  title = {Heart: excitation-contraction coupling.},
  author = {G A Langer},
  year = {1973},
  doi = {10.1146/annurev.ph.35.030173.000415},
  url = {https://pubmed.ncbi.nlm.nih.gov/4196573/},
  note = {Source identifier: 4196573}
}