@misc{indiciaeab5e0e6bfc04,
  title = {Activators: a practical approach.},
  author = {H C Hirzel and J M Grewe},
  year = {1974},
  doi = {10.1016/0002-9416(74)90114-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/4621250/},
  note = {Source identifier: 4621250}
}