@misc{indiciae330d861d758f,
  title = {On the vectorcardiographic changes in adults.},
  author = {J Vassilev},
  year = {1977},
  doi = {10.1159/000399625},
  url = {https://pubmed.ncbi.nlm.nih.gov/835440/},
  note = {Source identifier: 835440}
}