@misc{indiciaeff99203eca8f,
  title = {[Sonography of the knee extensor system].},
  author = {G Gruber},
  year = {1996},
  doi = {10.1055/s-2007-1003183},
  url = {https://pubmed.ncbi.nlm.nih.gov/9064762/},
  note = {Source identifier: 9064762}
}