@misc{indiciaea40d914d6382,
  title = {Letter: Macromolecular structures for undergraduates.},
  author = {M J Smith and L Roberts},
  year = {1974},
  doi = {10.1038/248813b0},
  url = {https://pubmed.ncbi.nlm.nih.gov/4835557/},
  note = {Source identifier: 4835557}
}