@misc{indiciae7d47833ed490,
  title = {[Documents certifying temporary disability: their drawing-up, registration and maintenance].},
  author = {N I Gavrilov and A S Kheĭfets},
  year = {1973},
  url = {https://pubmed.ncbi.nlm.nih.gov/4490106/},
  note = {Source identifier: 4490106}
}