@misc{indiciaeca360e172c1c,
  title = {Torsion of Rectangular Tubes.},
  author = {W Hovgaard},
  year = {1936},
  doi = {10.1073/pnas.22.6.362},
  url = {https://pubmed.ncbi.nlm.nih.gov/16588084/},
  note = {Source identifier: 16588084}
}