@misc{indiciaefd024c7d9fa1,
  title = {Heavy-quark thresholds and the effective strong coupling constant.},
  author = {D Zappal},
  year = {1993},
  doi = {10.1103/physrevd.47.5191},
  url = {https://pubmed.ncbi.nlm.nih.gov/10015534/},
  note = {Source identifier: 10015534}
}