@misc{indiciaeb1110c6e1b5d,
  title = {Simple laboratory method for producing enriched Carbon-13.},
  author = {R B BERNSTEIN},
  year = {1957},
  doi = {10.1126/science.126.3264.119},
  url = {https://pubmed.ncbi.nlm.nih.gov/13442655/},
  note = {Source identifier: 13442655}
}