@misc{indiciae00bf40bf1462,
  title = {Verapamil and cluster headache.},
  author = {T Catarci and T S Steiner},
  year = {1995},
  doi = {10.1111/j.1526-4610.1995.hed3501050\_5.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/7868339/},
  note = {Source identifier: 7868339}
}