@misc{indiciaeb89434082a28,
  title = {Small numbers in mutagenicity tests.},
  author = {A Grafe and J Vollmar},
  year = {1977},
  doi = {10.1007/bf00293660},
  url = {https://pubmed.ncbi.nlm.nih.gov/578712/},
  note = {Source identifier: 578712}
}