@misc{indiciae877851e8dead,
  title = {Data plan. Electronic key to practice management.},
  author = {M Lebendig},
  year = {1974},
  doi = {10.7547/87507315-64-2-121},
  url = {https://pubmed.ncbi.nlm.nih.gov/4813075/},
  note = {Source identifier: 4813075}
}