@misc{indiciaec0c7967cdd8d,
  title = {About a biologically active B12 polypeptide.},
  author = {K MULLI and O J SCHMID},
  year = {1956},
  url = {https://pubmed.ncbi.nlm.nih.gov/13456974/},
  note = {Source identifier: 13456974}
}